http://prl.aps.org/ Iron-based superconductor articles published in Physical Review Journals en-us Copyright (c) 2009 The American Physical Society 2009-11-07T12:25:52-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-07T12:25:52-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevB.80.184502 Author(s): S. Sharma, S. Shallcross, J. K. Dewhurst, A. Sanna, C. Bersier, S. Massidda, and E. K. U. Gross<br/>Using state-of-the-art first-principles calculations we study the magnetic behavior of CeOFeAs. We find the Ce layer moments oriented perpendicular to those of the Fe layers. An analysis of incommensurate magnetic structures reveals that the Ce-Ce magnetic coupling is rather weak with, however, a st...<br/>[Phys. Rev. B 80, 184502] Published Wed Nov 04, 2009 S. Sharma, S. Shallcross, J. K. Dewhurst, A. Sanna, C. Bersier, S. Massidda, and E. K. U. Gross 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.184502 Phys. Rev. B 80, 184502 text/html article Physical Review B 80 18 2009-11-04T00:00:00-05:00 184502 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.174401 Author(s): P. M. R. Brydon and C. Timm<br/>Motivated by the iron pnictides, we examine the spin excitations in an itinerant antiferromagnet where a spin-density wave (SDW) originates from an excitonic instability of nested electronlike and holelike Fermi pockets. Using the random-phase approximation, we derive the Dyson equation for the tran...<br/>[Phys. Rev. B 80, 174401] Published Tue Nov 03, 2009 P. M. R. Brydon and C. Timm 2009-11-03T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.174401 Phys. Rev. B 80, 174401 text/html article Physical Review B 80 17 2009-11-03T00:00:00-05:00 174401 Magnetism Magnetism http://link.aps.org/doi/10.1103/PhysRevB.80.180502 Author(s): A. Akrap, J. J. Tu, L. J. Li, G. H. Cao, Z. A. Xu, and C. C. Homes<br/>The detailed optical properties of BaFe_{2} As_{2} have been determined over a wide frequency range above and below the structural and magnetic transition at T_{N} ≃138 K . A prominent in-plane infrared-active mode is observed at 253 cm^{−1} (31.4 meV) at 295 K. The frequency of this vibrati...<br/><img src="http://prb.aps.org/files/SuggestionPRB30x30.jpg" alt="PRB Editors' Suggestion"/><br/> <img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 180502] Published Mon Nov 02, 2009 A. Akrap, J. J. Tu, L. J. Li, G. H. Cao, Z. A. Xu, and C. C. Homes 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.180502 Phys. Rev. B 80, 180502 text/html article Physical Review B 80 18 2009-11-02T00:00:00-05:00 180502 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.184501 Author(s): Guangtao Wang, Minping Zhang, Lihua Zheng, and Zongxian Yang<br/>Inspired by the experience in CuO-based superconductor that larger spacing distance between CuO planes induced higher superconductivity transition temperature (T_{C} ) , some researchers synthesized (Sr_{2} ScO_{3} )_{2} Fe_{2} As_{2} and (Sr_{2} VO_{3} )_{2} Fe_{2} As_{2} with the spacing distance ...<br/>[Phys. Rev. B 80, 184501] Published Mon Nov 02, 2009 Guangtao Wang, Minping Zhang, Lihua Zheng, and Zongxian Yang 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.184501 Phys. Rev. B 80, 184501 text/html article Physical Review B 80 18 2009-11-02T00:00:00-05:00 184501 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.140515 Author(s): A. V. Chubukov, M. G. Vavilov, and A. B. Vorontsov<br/>Using general symmetry arguments and model calculations we analyze the superconducting gap in materials with multiple Fermi-surface pockets, with applications to iron pnictides. We show that the gap in the pnictides has an extended s -wave symmetry but is either nodeless or has nodes, depending on t...<br/><img src="http://prb.aps.org/files/SuggestionPRB30x30.jpg" alt="PRB Editors' Suggestion"/><br/> <img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140515] Published Thu Oct 29, 2009 A. V. Chubukov, M. G. Vavilov, and A. B. Vorontsov 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140515 Phys. Rev. B 80, 140515 text/html article Physical Review B 80 14 2009-10-29T00:00:00-04:00 140515 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.144524 Author(s): Neeraj Kumar, Songxue Chi, Ying Chen, Kumari Gaurav Rana, A. K. Nigam, A. Thamizhavel, William Ratcliff, II, S. K. Dhar, and Jeffrey W. Lynn<br/>Magnetization, susceptibility, specific heat, resistivity, neutron and x-ray diffraction have been used to characterize the properties of single-crystalline CaFe_{2−x} Ni_{x} As_{2} as a function of Ni doping for x varying from 0 to 0.1. The combined first-order structural and magnetic phase trans...<br/>[Phys. Rev. B 80, 144524] Published Thu Oct 29, 2009 Neeraj Kumar, Songxue Chi, Ying Chen, Kumari Gaurav Rana, A. K. Nigam, A. Thamizhavel, William Ratcliff, II, S. K. Dhar, and Jeffrey W. Lynn 2009-10-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144524 Phys. Rev. B 80, 144524 text/html article Physical Review B 80 14 2009-10-29T00:00:00-04:00 144524 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.134523 Author(s): S. L. Bud’ko, P. C. Canfield, A. S. Sefat, B. C. Sales, M. A. McGuire, and D. Mandrus<br/>Heat capacity and anisotropic thermal expansion was measured for Fe_{1.06} Te and FeTe_{0.5} Se_{0.5} single crystals. Previously reported phase transitions are clearly seen in both measurements. In both cases the thermal expansion is anisotropic. The uniaxial pressure derivatives of the superconduc...<br/>[Phys. Rev. B 80, 134523] Published Wed Oct 28, 2009 S. L. Bud’ko, P. C. Canfield, A. S. Sefat, B. C. Sales, M. A. McGuire, and D. Mandrus 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.134523 Phys. Rev. B 80, 134523 text/html article Physical Review B 80 13 2009-10-28T00:00:00-04:00 134523 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevLett.103.186402 Author(s): Degang Zhang<br/>The energy band structure of FeAs-based superconductors is fitted by a tight-binding model with two Fe ions per unit cell and two degenerate orbitals per Fe ion. Based on this, superconductivity with extended s-wave pairing symmetry of the form cos⁡k_{x} +cos⁡k_{y} is examined. The local density...<br/>[Phys. Rev. Lett. 103, 186402] Published Mon Oct 26, 2009 Degang Zhang 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.186402 Phys. Rev. Lett. 103, 186402 text/html article Physical Review Letters 103 18 2009-10-26T00:00:00-04:00 186402 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://link.aps.org/doi/10.1103/PhysRevB.80.140511 Author(s): R. Khasanov, M. Bendele, A. Amato, P. Babkevich, A. T. Boothroyd, A. Cervellino, K. Conder, S. N. Gvasaliya, H. Keller, H.-H. Klauss, H. Luetkens, V. Pomjakushin, E. Pomjakushina, and B. Roessli<br/>We have studied the superconducting and magnetic properties of Fe_{1+y} Se_{x} Te_{1−x} single crystals (0≤x≤0.5) by magnetic susceptibility, muon-spin rotation, and neutron diffraction. We find three regimes of behavior: (i) commensurate magnetic order for x≲0.1 , (ii) bulk superconductivit...<br/><img src="http://prb.aps.org/files/SuggestionPRB30x30.jpg" alt="PRB Editors' Suggestion"/><br/> <img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140511] Published Mon Oct 26, 2009 R. Khasanov, M. Bendele, A. Amato, P. Babkevich, A. T. Boothroyd, A. Cervellino, K. Conder, S. N. Gvasaliya, H. Keller, H.-H. Klauss, H. Luetkens, V. Pomjakushin, E. Pomjakushina, and B. Roessli 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140511 Phys. Rev. B 80, 140511 text/html article Physical Review B 80 14 2009-10-26T00:00:00-04:00 140511 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.140512 Author(s): D. J. Scalapino and T. P. Devereaux<br/>Calculations of the pairing interaction in multiband models of the Fe superconductors show that it is attractive in both the A_{1g} ( s -wave) and B_{1g} ( d -wave) channels. This raises the possibility that these materials may have collective excitonic modes. Here, assuming an s -wave ground state,...<br/><img src="http://prb.aps.org/files/SuggestionPRB30x30.jpg" alt="PRB Editors' Suggestion"/><br/> <img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140512] Published Mon Oct 26, 2009 D. J. Scalapino and T. P. Devereaux 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140512 Phys. Rev. B 80, 140512 text/html article Physical Review B 80 14 2009-10-26T00:00:00-04:00 140512 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.134519 Author(s): Guodong Liu, Haiyun Liu, Lin Zhao, Wentao Zhang, Xiaowen Jia, Jianqiao Meng, Xiaoli Dong, Jun Zhang, G. F. Chen, Guiling Wang, Yong Zhou, Yong Zhu, Xiaoyang Wang, Zuyan Xu, Chuangtian Chen, and X. J. Zhou<br/>High-resolution angle-resolved photoemission measurements have been carried out on BaFe_{2} As_{2} , a parent compound of the FeAs-based superconductors. In the magnetic ordering state, there is no gap opening observed on the Fermi surface. Instead, dramatic band-structure reorganization occurs acro...<br/>[Phys. Rev. B 80, 134519] Published Fri Oct 23, 2009 Guodong Liu, Haiyun Liu, Lin Zhao, Wentao Zhang, Xiaowen Jia, Jianqiao Meng, Xiaoli Dong, Jun Zhang, G. F. Chen, Guiling Wang, Yong Zhou, Yong Zhu, Xiaoyang Wang, Zuyan Xu, Chuangtian Chen, and X. J. Zhou 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.134519 Phys. Rev. B 80, 134519 text/html article Physical Review B 80 13 2009-10-23T00:00:00-04:00 134519 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.144522 Author(s): Z. P. Yin and W. E. Pickett<br/>Superconductivity arises in the layered iron-pnictide compounds when magnetic long-range order disappears. We use first-principles density-functional methods to study magnetic arrangements that may compete with long-range order near the phase boundary. Specifically, we study the energetics and charg...<br/>[Phys. Rev. B 80, 144522] Published Thu Oct 22, 2009 Z. P. Yin and W. E. Pickett 2009-10-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144522 Phys. Rev. B 80, 144522 text/html article Physical Review B 80 14 2009-10-22T00:00:00-04:00 144522 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevLett.103.177001 Author(s): Seiichiro Onari and Hiroshi Kontani<br/>Based on the five-orbital model, we study the effect of local impurity in iron pnictides, and find that the interband impurity scattering is promoted by the d-orbital degree of freedom. This fact means that the fully gapped sign-reversing s-wave state, which is predicted by spin fluctuation theories...<br/>[Phys. Rev. Lett. 103, 177001] Published Wed Oct 21, 2009 Seiichiro Onari and Hiroshi Kontani 2009-10-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.177001 Phys. Rev. Lett. 103, 177001 text/html article Physical Review Letters 103 17 2009-10-21T00:00:00-04:00 177001 Condensed Matter: Electronic Properties, etc. Condensed Matter: Electronic Properties, etc. http://link.aps.org/doi/10.1103/PhysRevB.80.144519 Author(s): Chao Zhang, Wei Yi, Liling Sun, Xiao-Jia Chen, Russell J. Hemley, Ho-kwang Mao, Wei Lu, Xiaoli Dong, Ligang Bai, Jing Liu, Antonio F. Moreira Dos Santos, Jamie J. Molaison, Christopher A. Tulk, Genfu Chen, Nanlin Wang, and Zhongxian Zhao<br/>Pressure-induced lattice collapse was discovered in tetragonal (T) phase of single crystal Fe_{1.05} Te at room temperature through x-ray and neutron-diffraction measurements. A remarkable compression along the c axis (∼5%) was observed upon increasing pressure from the ambient condition to 4 GPa....<br/>[Phys. Rev. B 80, 144519] Published Wed Oct 21, 2009 Chao Zhang, Wei Yi, Liling Sun, Xiao-Jia Chen, Russell J. Hemley, Ho-kwang Mao, Wei Lu, Xiaoli Dong, Ligang Bai, Jing Liu, Antonio F. Moreira Dos Santos, Jamie J. Molaison, Christopher A. Tulk, Genfu Chen, Nanlin Wang, and Zhongxian Zhao 2009-10-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144519 Phys. Rev. B 80, 144519 text/html article Physical Review B 80 14 2009-10-21T00:00:00-04:00 144519 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.140508 Author(s): Lei Fang, Huiqian Luo, Peng Cheng, Zhaosheng Wang, Ying Jia, Gang Mu, Bing Shen, I. I. Mazin, Lei Shan, Cong Ren, and Hai-Hu Wen<br/>We report a systematic investigation, together with a theoretical analysis, of the resistivity and Hall effect in single crystals of Ba(Fe_{1−x} Co_{x} )_{2} As_{2} over a wide doping range. We find a surprisingly great disparity between the relaxation rates of the holes and the electrons in exces...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140508] Published Fri Oct 16, 2009 Lei Fang, Huiqian Luo, Peng Cheng, Zhaosheng Wang, Ying Jia, Gang Mu, Bing Shen, I. I. Mazin, Lei Shan, Cong Ren, and Hai-Hu Wen 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140508 Phys. Rev. B 80, 140508 text/html article Physical Review B 80 14 2009-10-16T00:00:00-04:00 140508 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.144517 Author(s): C. R. Rotundu, D. T. Keane, B. Freelon, S. D. Wilson, A. Kim, P. N. Valdivia, E. Bourret-Courchesne, and R. J. Birgeneau<br/>The electronic phase diagram of PrFeAsO_{1−x} F_{x} (0≤x≤0.225) has been determined using synchrotron x-ray powder-diffraction, magnetization, and resistivity measurements. The structural transition temperature is suppressed from 154 to ≈120 K and the magnetic phase transitions of both iro...<br/>[Phys. Rev. B 80, 144517] Published Thu Oct 15, 2009 C. R. Rotundu, D. T. Keane, B. Freelon, S. D. Wilson, A. Kim, P. N. Valdivia, E. Bourret-Courchesne, and R. J. Birgeneau 2009-10-15T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144517 Phys. Rev. B 80, 144517 text/html article Physical Review B 80 14 2009-10-15T00:00:00-04:00 144517 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.134411 Author(s): Javier Herrero-Martín, Valerio Scagnoli, Claudio Mazzoli, Yixi Su, Ranjan Mittal, Yinguo Xiao, Thomas Brueckel, Neeraj Kumar, S. K. Dhar, A. Thamizhavel, and Luigi Paolasini<br/>Magnetic resonant x-ray scattering experiments have been performed on a single crystal of EuFe_{2} As_{2} at the Eu L_{3} absorption edge. The orientation of Eu magnetic moments was directly determined: in the antiferromagnetic (AFM) ordered phase they lay parallel to the crystallographic a axis. ...<br/>[Phys. Rev. B 80, 134411] Published Tue Oct 13, 2009 Javier Herrero-Martín, Valerio Scagnoli, Claudio Mazzoli, Yixi Su, Ranjan Mittal, Yinguo Xiao, Thomas Brueckel, Neeraj Kumar, S. K. Dhar, A. Thamizhavel, and Luigi Paolasini 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.134411 Phys. Rev. B 80, 134411 text/html article Physical Review B 80 13 2009-10-13T00:00:00-04:00 134411 Magnetism Magnetism http://link.aps.org/doi/10.1103/PhysRevB.80.144516 Author(s): R. H. Liu, D. Tan, Y. A. Song, Q. J. Li, Y. J. Yan, J. J. Ying, Y. L. Xie, X. F. Wang, and X. H. Chen<br/>The compounds Na_{2} Ti_{2} P_{2} O (P=As,Sb) with anti- K_{2} NiF_{4} structure were characterized by magnetic susceptibility, magnetoresistance, Hall coefficient (R_{H} ) , heat capacity, and thermoelectric power (TEP). These compounds exhibit an anomalous transition in resistivity and susceptibil...<br/>[Phys. Rev. B 80, 144516] Published Tue Oct 13, 2009 R. H. Liu, D. Tan, Y. A. Song, Q. J. Li, Y. J. Yan, J. J. Ying, Y. L. Xie, X. F. Wang, and X. H. Chen 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144516 Phys. Rev. B 80, 144516 text/html article Physical Review B 80 14 2009-10-13T00:00:00-04:00 144516 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.144515 Author(s): D. L. Sun, Y. Liu, and C. T. Lin<br/>A comparative study of the upper critical field H_{c2} and second magnetization peak H_{sp} was performed using high-quality single crystals of hole-doped Ba_{0.68} K_{0.32} Fe_{2} As_{2} and electron-doped BaFe_{1.85} Co_{0.15} As_{2} and BaFe_{1.91} Ni_{0.09} As_{2} . The H_{c2} was extracted from...<br/>[Phys. Rev. B 80, 144515] Published Mon Oct 12, 2009 D. L. Sun, Y. Liu, and C. T. Lin 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144515 Phys. Rev. B 80, 144515 text/html article Physical Review B 80 14 2009-10-12T00:00:00-04:00 144515 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.140507 Author(s): F. Massee, S. de Jong, Y. Huang, J. Kaas, E. van Heumen, J. B. Goedkoop, and M. S. Golden<br/>We elucidate the termination surface of cleaved single crystals of the BaFe_{2−x} Co_{x} As_{2} and Fe_{y} Se_{1−x} Te_{x} families of the high-temperature iron-based superconductors. By combining scanning tunneling microscopic data with low-energy electron diffraction we prove that the terminat...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140507] Published Fri Oct 09, 2009 F. Massee, S. de Jong, Y. Huang, J. Kaas, E. van Heumen, J. B. Goedkoop, and M. S. Golden 2009-10-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140507 Phys. Rev. B 80, 140507 text/html article Physical Review B 80 14 2009-10-09T00:00:00-04:00 140507 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.144512 Author(s): Hyun-Sook Lee, Marek Bartkowiak, Jae-Hyun Park, Jae-Yeap Lee, Ju-Young Kim, Nak-Heon Sung, B. K. Cho, Chang-Uk Jung, Jun Sung Kim, and Hu-Jong Lee<br/>We investigated the temperature dependence of the upper critical field [H_{c2} (T)] of fluorine-free SmFeAsO_{0.85} and fluorine-doped SmFeAsO_{0.8} F_{0.2} single crystals by measuring the resistive transition in low static magnetic fields and in pulsed fields up to 60 T. Both crystals show that H_...<br/>[Phys. Rev. B 80, 144512] Published Fri Oct 09, 2009 Hyun-Sook Lee, Marek Bartkowiak, Jae-Hyun Park, Jae-Yeap Lee, Ju-Young Kim, Nak-Heon Sung, B. K. Cho, Chang-Uk Jung, Jun Sung Kim, and Hu-Jong Lee 2009-10-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144512 Phys. Rev. B 80, 144512 text/html article Physical Review B 80 14 2009-10-09T00:00:00-04:00 144512 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.165115 Author(s): V. Brouet, M. Marsi, B. Mansart, A. Nicolaou, A. Taleb-Ibrahimi, P. Le Fèvre, F. Bertran, F. Rullier-Albenque, A. Forget, and D. Colson<br/>We present a comprehensive angle-resolved photoemission study of the three-dimensional electronic structure of Ba(Fe_{1−x} Co_{x} )_{2} As_{2} . The wide range of dopings covered by this study, x=0 to x=0.3 , allows to extract systematic features of the electronic structure. We show that there are...<br/>[Phys. Rev. B 80, 165115] Published Fri Oct 09, 2009 V. Brouet, M. Marsi, B. Mansart, A. Nicolaou, A. Taleb-Ibrahimi, P. Le Fèvre, F. Bertran, F. Rullier-Albenque, A. Forget, and D. Colson 2009-10-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.165115 Phys. Rev. B 80, 165115 text/html article Physical Review B 80 16 2009-10-09T00:00:00-04:00 165115 Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://link.aps.org/doi/10.1103/PhysRevB.80.140503 Author(s): X. G. Luo, M. A. Tanatar, J.-Ph. Reid, H. Shakeripour, N. Doiron-Leyraud, N. Ni, S. L. Bud’ko, P. C. Canfield, Huiqian Luo, Zhaosheng Wang, Hai-Hu Wen, R. Prozorov, and Louis Taillefer<br/>The thermal conductivity κ of the iron-arsenide superconductor Ba_{1−x} K_{x} Fe_{2} As_{2} (T_{c} ≃30 K) was measured in single crystals at temperatures down to T≃50 mK(≃T_{c} /600) and in magnetic fields up to H=15 T(≃H_{c2} /4) . A negligible residual linear term in κ/T as T→0...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140503] Published Thu Oct 08, 2009 X. G. Luo, M. A. Tanatar, J.-Ph. Reid, H. Shakeripour, N. Doiron-Leyraud, N. Ni, S. L. Bud’ko, P. C. Canfield, Huiqian Luo, Zhaosheng Wang, Hai-Hu Wen, R. Prozorov, and Louis Taillefer 2009-10-08T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140503 Phys. Rev. B 80, 140503 text/html article Physical Review B 80 14 2009-10-08T00:00:00-04:00 140503 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.134505 Author(s): Hong-Min Jiang, Jian-Xin Li, and Z. D. Wang<br/>Magnetism in the FeAs stoichiometric compounds and its interplay with superconductivity in vortex states are studied by self-consistently solving the Bogoliubov-de Gennes equations based on a two-orbital model with including the on-site interactions between electrons in the two orbitals. It is revea...<br/>[Phys. Rev. B 80, 134505] Published Wed Oct 07, 2009 Hong-Min Jiang, Jian-Xin Li, and Z. D. Wang 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.134505 Phys. Rev. B 80, 134505 text/html article Physical Review B 80 13 2009-10-07T00:00:00-04:00 134505 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.165111 Author(s): Hiroki Nakamura and Masahiko Machida<br/>We perform first-principles calculations for an iron-based superconductor LaFeAsO in order to study its pressure effects. As the pressure increases, we find a change from monotonic to nonmonotonic shrinking manner in lattice constants and related crystalline parameters at 20 GPa and a structural tra...<br/>[Phys. Rev. B 80, 165111] Published Wed Oct 07, 2009 Hiroki Nakamura and Masahiko Machida 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.165111 Phys. Rev. B 80, 165111 text/html article Physical Review B 80 16 2009-10-07T00:00:00-04:00 165111 Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://link.aps.org/doi/10.1103/PhysRevB.80.144507 Author(s): Iver Bakken Sperstad, Jacob Linder, and Asle Sudbø<br/>We study quantum transport in ballistic s_{±} -wave superconductors where coupling between the two bands is included and apply our model to three possible probes for detecting the internal phase shift of such a pairing state: tunneling spectroscopy in a N∣s_{±} -wave junction, crossed Andreev re...<br/>[Phys. Rev. B 80, 144507] Published Tue Oct 06, 2009 Iver Bakken Sperstad, Jacob Linder, and Asle Sudbø 2009-10-06T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.144507 Phys. Rev. B 80, 144507 text/html article Physical Review B 80 14 2009-10-06T00:00:00-04:00 144507 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.140501 Author(s): Y. Laplace, J. Bobroff, F. Rullier-Albenque, D. Colson, and A. Forget<br/>^{75} As nuclear magnetic resonance (NMR) and susceptiblity were measured in a Ba(Fe_{1−x} Co_{x} )_{2} As_{2} single crystal for x=6% . NMR spectra and relaxation rates allow to show that all Fe sites experience an incommensurate magnetic ordering below T=31 K . Comparison with undoped compound...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. B 80, 140501] Published Mon Oct 05, 2009 Y. Laplace, J. Bobroff, F. Rullier-Albenque, D. Colson, and A. Forget 2009-10-05T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.140501 Phys. Rev. B 80, 140501 text/html article Physical Review B 80 14 2009-10-05T00:00:00-04:00 140501 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevB.80.165108 Author(s): B. C. Chang, Y. B. You, T. J. Shiu, M. F. Tai, H. C. Ku, Y. Y. Hsu, L. Y. Jang, J. F. Lee, Z. Wei, K. Q. Ruan, and X. G. Li<br/>Anisotropic Fe K -edge and As K -edge x-ray absorption near-edge spectrum measurements on superconducting (T_{c} =52 K) (Sm_{0.95} La_{0.05} )FeAs(O_{0.85} F_{0.15} ) field-aligned microcrystalline powder are presented. The angular dependence of Fe pre-edge peak (dipole transition of Fe 1s e...<br/>[Phys. Rev. B 80, 165108] Published Mon Oct 05, 2009 B. C. Chang, Y. B. You, T. J. Shiu, M. F. Tai, H. C. Ku, Y. Y. Hsu, L. Y. Jang, J. F. Lee, Z. Wei, K. Q. Ruan, and X. G. Li 2009-10-05T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.165108 Phys. Rev. B 80, 165108 text/html article Physical Review B 80 16 2009-10-05T00:00:00-04:00 165108 Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://link.aps.org/doi/10.1103/PhysRevB.80.165107 Author(s): Shuang Jia, A. J. Williams, P. W. Stephens, and R. J. Cava<br/>We report that the 122-type Sr_{1−x} Ca_{x} Co_{2} P_{2} solid solution undergoes an anomalous structural transition from the uncollapsed to the collapsed ThCr_{2} Si_{2} structure at a distinct onset composition near x=0.5 . Correlated with the structural changes, the electronic system evolves fr...<br/><img src="http://prb.aps.org/files/SuggestionPRB30x30.jpg" alt="PRB Editors' Suggestion"/><br/> [Phys. Rev. B 80, 165107] Published Fri Oct 02, 2009 Shuang Jia, A. J. Williams, P. W. Stephens, and R. J. Cava 2009-10-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.165107 Phys. Rev. B 80, 165107 text/html article Physical Review B 80 16 2009-10-02T00:00:00-04:00 165107 Electronic structure: wide-band, narrow-band, and strongly correlated systems Electronic structure: wide-band, narrow-band, and strongly correlated systems http://link.aps.org/doi/10.1103/PhysRevB.80.094530 Author(s): Yu-Zhong Zhang, Hem C. Kandpal, Ingo Opahle, Harald O. Jeschke, and Roser Valentí<br/>Using ab initio molecular dynamics we investigate the electronic and lattice structure of AFe_{2} As_{2} (A=Ca,Sr,Ba) under pressure. We find that the structural phase transition (orthorhombic to tetragonal symmetry) is always accompanied by a magnetic phase transition in all the compounds while the...<br/>[Phys. Rev. B 80, 094530] Published Wed Sep 30, 2009 Yu-Zhong Zhang, Hem C. Kandpal, Ingo Opahle, Harald O. Jeschke, and Roser Valentí 2009-09-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.094530 Phys. Rev. B 80, 094530 text/html article Physical Review B 80 9 2009-09-30T00:00:00-04:00 094530 Superfluidity and superconductivity Superfluidity and superconductivity