21 papers
Localization and Transport in a Non-Hermitian Hexagonal Harper Model
Akshey Rajoriya, Dibyajyoti Sahu, Suhas Gangadharaiah +1
We investigate a one-dimensional non-Hermitian hexagonal Harper model with quasiperiodically modulated hopping amplitudes. In the Hermitian limit, the model exhibits metallic, insu…
Topological Hall plateau in quasi-2D kagome magnet YMnSn
Sambit Jena, Nastaran Salehi, Manuel Pereiro Lopez +5
We examine the impact of the Dzyaloshinskii-Moriya interaction (DMI) in kagome magnets and show that a predominantly planar DMI together with ferromagnetic exchange stabilizes a di…
Spin-orbit coupling driven topological superconductivity in twisted bilayer graphene-WSe heterostructures
Kamalesh Bera, Arijit Saha, Tanay Nag
Commencing from the low-energy Bistritzer-MacDonald continuum model of twisted bi-layer graphene (tBLG) with proximity-induced Ising, Rashba, and intrinsic spin-orbit couplings (SO…
Superconducting diode effect via Floquet topological Fulde-Ferrell phase in driven Rashba nanowire
Sayak Bhowmik, Arijit Saha, Tanay Nag
Much has been studied on Floquet engineering in Rashba nanowire model regarding topological superconductivity hosting Majorana - and anomalous -modes, here we theoretically…
Chiral topological superconductivity in twisted bilayer and double bilayer graphene
Kamalesh Bera, Tanay Nag, Arijit Saha
We present a theoretical investigation of the emergence of chiral topological superconductivity in small-angle twisted bilayer graphene (tBLG) and twisted double bilayer graphene (…
Quantized orbital and spin Hall transport: interplay between -hybridization, altermagnetism and spin-orbit coupling
Saikat Saha, Banasree Sadhukhan, Tanay Nag
We here explore the emergence of orbital and spin Hall effects, originating beyond the - coupling, and investigate the interplay between inter-orbit hybridization, relativist…