Bibliographic Details
| Title: |
Topological responses from gapped Weyl points in 2D altermagnets |
| Authors: |
Parshukov, Kirill, Wiedmann, Raymond, Schnyder, Andreas P. |
| Publication Year: |
2024 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| More Details: |
We study the symmetry requirements for topologically protected spin-polarized Weyl points in 2D altermagnets. The topology is characterized by a quantized $\pi$-Berry phase and the degeneracy is protected by spin-space group symmetries. Gapped phases with finite Chern and/or spin/chirality Chern numbers emerge under different symmetry-breaking mass terms. We investigate the surface and transport properties of these gapped phases using representative electronic tight-binding and magnonic linear spin-wave models. In particular, we calculate the electronic and magnonic Hall currents and discuss implications for experiments.
Comment: 20 pages, 10 figures, 2 tables |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2403.09520 |
| Accession Number: |
edsarx.2403.09520 |
| Database: |
arXiv |
