Orbital Occupancy and Charge Doping in Iron-Based Superconductors

被引:13
|
作者
Cantoni, Claudia [1 ]
Mitchell, Jonathan E. [1 ]
May, Andrew F. [1 ]
McGuire, Michael A. [1 ]
Idrobo, Juan-Carlos [1 ,2 ,3 ]
Berlijn, Tom [3 ,4 ]
Dagotto, Elbio [5 ]
Chisholm, Matthew F. [1 ]
Zhou, Wu [1 ,2 ]
Pennycook, Stephen J. [1 ]
Sefat, Athena S. [1 ]
Sales, Brian C. [1 ]
机构
[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA
[4] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA
[5] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
基金
美国国家科学基金会;
关键词
X-RAY-ABSORPTION; MAGNETIC-BEHAVIOR; TRANSITION; A(X)FE(2)SE(2); PNICTIDES; RATIO;
D O I
10.1002/adma.201401518
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The intrinsic Fe local magnetic moment and Fe orbital occupations of iron-based superconductors are unveiled through the local, real-space capability of aberration-corrected scanning transmission electron microscopy/electron energy loss spectroscopy (STEM/EELS). Although the ordering of Fe moments needs to be suppressed for superconductivity to arise, the local, fluctuating Fe magnetic moment is enhanced near optimal superconductivity.
引用
收藏
页码:6193 / +
页数:7
相关论文
共 50 条
  • [1] Spin, charge, and orbital orderings in iron-based superconductors
    江庆
    康耀太
    姚道新
    Chinese Physics B, 2013, (08) : 79 - 85
  • [2] Spin, charge, and orbital orderings in iron-based superconductors
    Jiang Qing
    Kang Yao-Tai
    Yao Dao-Xin
    CHINESE PHYSICS B, 2013, 22 (08)
  • [3] Orbital ordering and charge profile deformation in iron-based superconductors
    Machida, Masahiko
    Nakamura, Hiroki
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2013, 484 : 43 - 45
  • [4] Orbital loop currents in iron-based superconductors
    Klug, Markus
    Kang, Jian
    Fernandes, Rafael M.
    Schmalian, Joerg
    PHYSICAL REVIEW B, 2018, 97 (15)
  • [5] Three orbital model for the iron-based superconductors
    Daghofer, Maria
    Nicholson, Andrew
    Moreo, Adriana
    Dagotto, Elbio
    PHYSICAL REVIEW B, 2010, 81 (01)
  • [6] A New Take on Doping in Iron-Based Superconductors
    不详
    SCIENCE, 2009, 324 (5926) : 452 - 453
  • [7] The Role of Orbital Nesting in the Superconductivity of Iron-Based Superconductors
    Fernandez-Martin, Raquel
    Calderon, Maria J.
    Fanfarillo, Laura
    Valenzuela, Belen
    CONDENSED MATTER, 2021, 6 (03):
  • [8] Role of the orbital degree of freedom in iron-based superconductors
    Yi, Ming
    Zhang, Yan
    Shen, Zhi-Xun
    Lu, Donghui
    NPJ QUANTUM MATERIALS, 2017, 2
  • [9] Role of the orbital degree of freedom in iron-based superconductors
    Ming Yi
    Yan Zhang
    Zhi-Xun Shen
    Donghui Lu
    npj Quantum Materials, 2
  • [10] Orbital selective pairing and gap structures of iron-based superconductors
    Kreisel, Andreas
    Andersen, Brian M.
    Sprau, P. O.
    Kostin, A.
    Davis, J. C. Seamus
    Hirschfeld, P. J.
    PHYSICAL REVIEW B, 2017, 95 (17)