https://doi.org/10.1140/epjb/s10051-021-00080-4
Regular Article - Solid State and Materials
Momentum space imaging of nonsymmorphic superconductors with locally broken inversion symmetry
1
Department of Physics and Astronomy, University of Manitoba, R3T 2N2, Winnipeg, Canada
2
Asia Pacific Center for Theoretical Physics, 790-784, Pohang, Gyeongbuk, Korea
3
Manitoba Quantum Institute, University of Manitoba, R3T 2N2, Winnipeg, Canada
4
Department of Physics, Qom University of Technology, 37181-46645, Qom, Iran
5
Max Planck Institute for the Chemical Physics of Solids, 01187, Dresden, Germany
6
Max Planck POSTECH Center for Complex Phase Materials, POSTECH, 790-784, Pohang, Republic of Korea
7
Department of Physics, POSTECH, 790-784, Pohang, Gyeongbuk, Republic of Korea
a
mehdi.biderang@umanitoba.ca
c
akbari@postech.ac.kr
Received:
30
June
2020
Accepted:
8
March
2021
Published online:
24
March
2021
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.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021