3 papers
cond-mat.dis-nn2026
Spin-aligned butterfly spectral map in Non-Hermitian quasicrystals
Soumya Ranjan Padhi, Souvik Roy, Debashree Chowdhury +1
The Non-Hermitian spinful Aubry-André-Harper (AAH) model in the presence of Rashba-type spin-orbit coupling (RSOC) and a spatially varying textured magnetic field is studied. Inter…
cond-mat.quant-gas2025
Non-Hermitian comb effect in coupled clean and quasiperiodic chains
Soumya Ranjan Padhi, Souvik Roy, Biswajit Paul +2
We study localization properties in a system of non-Hermitian quasiperiodic chain coupled to a uniform chain or clean chain by inter-chain hopping. We find that in the limit of wea…
cond-mat.other2025
Flux-driven charge and spin transport in a dimerized Hubbard ring with Fibonacci modulation
Souvik Roy, Soumya Ranjan Padhi, Tapan Mishra
We study quantum transport in a one-dimensional Hubbard ring with dimerized nearest-neighbor hoppings and a Fibonacci-modulated onsite potential. For non-interacting case our analy…