Momentum space imaging of nonsymmorphic superconductors with locally broken 
inversion symmetry

Biderang, Mehdi; Zare, Mohammad-Hossein; Akbari, Alireza

doi:10.1140/epjb/s10051-021-00080-4

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Momentum space imaging of nonsymmorphic superconductors with locally broken inversion symmetry

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Akbari, Alireza
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Biderang, M., Zare, M.-H., & Akbari, A. (2021). Momentum space imaging of nonsymmorphic superconductors with locally broken inversion symmetry. European Physical Journal B, 94(3): 69, pp. 1-7. doi:10.1140/epjb/s10051-021-00080-4.

Cite as: https://hdl.handle.net/21.11116/0000-0008-4A4F-E

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.