Momentum space imaging of nonsymmorphic superconductors with locally broken inversion symmetry

Mehdi Biderang (), Mohammad-Hossein Zare and Alireza Akbari ()
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Mehdi Biderang: University of Manitoba
Mohammad-Hossein Zare: Qom University of Technology
Alireza Akbari: Asia Pacific Center for Theoretical Physics

The European Physical Journal B: Condensed Matter and Complex Systems, 2021, vol. 94, issue 3, 1-7

Abstract: Abstract The failure of spatial inversion symmetry in noncentrosymmetric materials introduces two different types of spin-independent and spin-dependent electron hopping. The spin-dependent term can be translated into a quasi-spin–orbit coupling and may affect the electronic structure. In the locally noncentrosymmetric crystals, the presence of a sublattice degree of freedom generates a distinction between the inter- and intra-sublattice hopping integrals. The spin-dependent part of the former (latter), which is even (odd) under parity, is called symmetric (antisymmetric) quasi-spin–orbit coupling. Here, we show the consequences of such quasi-spin–orbit couplings on the electronic band structure, and study their characteristic features via the quasiparticle interference method. We extend our discussions to a realistic class of materials, known as transition metal oxides. Graphic abstract

Date: 2021
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DOI: 10.1140/epjb/s10051-021-00080-4

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