ITP OpenIR  > 理论物理所2011年知识产出
Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor
Zhang, CL; Wang, M; Luo, HQ; Wang, MY; Liu, MS; Zhao, J; Abernathy, DL; Maier, TA; Marty, K; Lumsden, MD; Chi, SX; Chang, S; Rodriguez-Rivera, JA; Lynn, JW; Xiang, T; Hu, JP; Dai, P; Dai, P (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
2011
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号1期号:*页码:115
摘要We report inelastic neutron scattering experiments on single crystals of superconducting Ba0.67K0.33Fe2As2 (T-c = 538 K). In addition to confirming the resonance previously found in powder samples, we find that spin excitations in the normal state form longitudinally elongated ellipses along the Q(AFM) direction in momentum space, consistent with density functional theory predictions. On cooling below T-c, while the resonance preserves its momentum anisotropy as expected, spin excitations at energies below the resonance become essentially isotropic in the in-plane momentum space and dramatically increase their correlation length. These results suggest that the superconducting gap structures in Ba(0.67)Ka(0.33)Fe(2)As(2) are more complicated than those suggested from angle resolved photoemission experiments.
部门归属[Zhang, Chenglin; Wang, Meng; Wang, Miaoyin; Liu, Mengshu; Zhao, Jun; Dai, Pengcheng] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA; [Wang, Meng; Luo, Huiqian; Xiang, Tao; Hu, Jiangping; Dai, Pengcheng] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China; [Abernathy, D. L.; Marty, Karol; Lumsden, M. D.; Dai, Pengcheng] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA; [Maier, T. A.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA; [Maier, T. A.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA; [Chi, Songxue; Chang, Sung; Rodriguez-Rivera, Jose A.; Lynn, J. W.] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA; [Chi, Songxue; Rodriguez-Rivera, Jose A.] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20899 USA; [Xiang, Tao] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Hu, Jiangping] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA
关键词Pairing Symmetry Iron Pnictides Ba0.6k0.4fe2as2
学科领域Physics
资助者US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE
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收录类别SCI
语种英语
资助者US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE ; US Department of Energy, Division of Materials Science, Basic Energy Sciences [DOE DE-FG02-05ER46202]; US Department of Energy, Division of Scientific User Facilities, Basic Energy Sciences; National Science Foundation [DMR-0454672, DMR-0944772]; Chinese Academy of Sciences; Center for Nanophase Materials Sciences; ORNL by Basic Energy Sciences, U.S. DOE
WOS记录号WOS:000296056500001
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被引频次:56[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14251
专题理论物理所2011年知识产出
通讯作者Dai, P (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
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Zhang, CL,Wang, M,Luo, HQ,et al. Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor[J]. SCIENTIFIC REPORTS,2011,1(*):115.
APA Zhang, CL.,Wang, M.,Luo, HQ.,Wang, MY.,Liu, MS.,...&Dai, P .(2011).Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor.SCIENTIFIC REPORTS,1(*),115.
MLA Zhang, CL,et al."Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor".SCIENTIFIC REPORTS 1.*(2011):115.
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