12 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…
Multiple many-body localization transitions in a driven non-Hermitian quasiperiodic chain
Sanchayan Banerjee, Ayan Banerjee, Tapan Mishra +1
We investigate the fate of a many-body localized phase in a non-Hermitian quasiperiodic model of hardcore bosons subjected to periodic driving. While in general, the many-body loca…
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…
Emergence of non-trivial phases in interacting non-Hermitian quasiperiodic chains with power-law hopping
Aditi Chakrabarty, Sanchayan Banerjee, Tapan Mishra +1
In the last few years, several works have identified the concurrence of the spectral, delocalization-localization and topological phase transitions in non-Hermitian quasiperiodic s…
Topological phase transition through tunable nearest-neighbor interactions in a one-dimensional lattice
Rajashri Parida, Diptiman Sen, Tapan Mishra
We investigate the phase diagram of a one-dimensional model of hardcore bosons or spinless fermions with tunable nearest-neighbor interactions. By introducing alternating repulsive…