Spin-aligned butterfly spectral map in Non-Hermitian quasicrystals
Disordered Systems and Neural Networks
2026-01-09 v1 Other Condensed Matter
Quantum Gases
Abstract
The Non-Hermitian spinful Aubry-Andr\'e-Harper (AAH) model in the presence of Rashba-type spin-orbit coupling (RSOC) and a spatially varying textured magnetic field is studied. Interestingly, our analysis produces a butterfly spectral map due to the non-trivial extent of localization of the states in the spectrum. This spectral map also exhibits an asymmetric spin alignment with respect to the wings of the butterfly. Our analysis also suggests that the onset of such a spectral map is a combined effect of the non-hermiticity, spin-orbit interaction, and the textured magnetic field.
Cite
@article{arxiv.2601.04986,
title = {Spin-aligned butterfly spectral map in Non-Hermitian quasicrystals},
author = {Soumya Ranjan Padhi and Souvik Roy and Debashree Chowdhury and Tapan Mishra},
journal= {arXiv preprint arXiv:2601.04986},
year = {2026}
}
Comments
5 pages, 4 figures