4 papers
Emergence of charge and spin current in non-Hermitian quantum ring
Soumya Ranjan Padhi, Souvik Roy, Tapan Mishra
We investigate the charge and spin transport in a non-Hermitian ring of electrons subject to an external Zeeman field. By introducing non-Hermiticity through anti-Hermitian hopping…
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. Inte…
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…
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…