Magnetic parity violation and parity-time-reversal-symmetric magnets
Abstract
Parity-time-reversal symmetry ( symmetry), a symmetry for the combined operations of space inversion ( ) and time reversal ( ), is a fundamental concept of physics and characterizes the functionality of materials as well as and symmetries. In particular, the -symmetric systems can be found in the centrosymmetric crystals undergoing the parity-violating magnetic order which we call the odd-parity magnetic multipole order. While this spontaneous order leaves symmetry intact, the simultaneous violation of and symmetries gives rise to various emergent responses that are qualitatively different from those allowed by the nonmagnetic -symmetry breaking or by the ferromagnetic order. In this review, we introduce candidates hosting the intriguing spontaneous order and overview the characteristic physical responses. Various off-diagonal and/or nonreciprocal responses are identified, which are closely related to the unusual electronic structures such as hidden spin-momentum locking and asymmetric band dispersion.
- Publication:
-
Journal of Physics Condensed Matter
- Pub Date:
- September 2024
- DOI:
- 10.1088/1361-648X/ad52dd
- arXiv:
- arXiv:2403.15680
- Bibcode:
- 2024JPCM...36K3001W
- Keywords:
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- antiferromagnetic spintronics;
- locally noncentrosymmetric system;
- superconductivity;
- nonreciprocal;
- 𝒫-symmetry;
- Condensed Matter - Materials Science
- E-Print:
- Invited topical review in Journal of Physics: Condensed Matter, 55 pages