articleJournal of the Physical Society of JapanNov 8, 2019GREEN OA

Momentum-Dependent Spin Splitting by Collinear Antiferromagnetic Ordering

SHSatoru HayamiYYYuki YanagiHKHiroaki Kusunose

Hokkaido University · Tohoku University · +2 more institutions

Indexed inarxivcrossref

Abstract

We clarify the macroscopic symmetry and microscopic model-parameter conditions for emergence of spin-split electronic band structure in collinear antiferromagnets without atomic spin-orbit coupling. By using the microscopic multipole descriptions, we elucidate the fundamental degree of freedom in a cluster unit of an antiferromagnet giving rise to an effective spin-orbit interaction through the anisotropic kinetic motions of electrons. We show a correspondence of the ordering patterns and resultant momentum-dependent spin splitting for 32 crystallographic point groups after demonstrating two intuitive examples of four-sublattice pyrochlore and tetragonal systems. Our study unveils potential features of…

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439
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6.88
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100%
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46
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Authors

3
  • SH
    Satoru HayamiCorresponding

    Hokkaido University

  • YY
    Yuki Yanagi

    Tohoku University, Advanced Institute of Materials Science

  • HK
    Hiroaki Kusunose

    Meiji University

Topics & keywords

Topics
Keywords
  • Antiferromagnetism
  • Tetragonal crystal system
  • Symmetry (geometry)
  • Anisotropy
  • Coupling (piping)
  • Spin (aerodynamics)
  • Degrees of freedom (physics and chemistry)
  • Electronic band structure
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