923 citations
- Homi Bhabha National InstituteIN134 papers
- Tata Institute of Fundamental ResearchIN28 papers
- Saha Institute of Nuclear PhysicsIN25 papers
- University of CalcuttaIN23 papers
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19 papers · 1 filter
Topological energy pumping in a quasi-periodically driven four-level system
Vansh Kaushik, Sayan Choudhury, Tanay Nag
We investigate a quasi-periodically driven four-level system that serves as a temporal analog of topological phenomena found in four-band models with intertwined spin and orbital d…
Magneto tunnel conductance across twisted Weyl semimetal junctions
Nirnoy Basak, Sumathi Rao, Faruk Abdulla
We investigate magnetotransport across an interface between two Weyl semimetals (finite in both directions) whose Weyl nodes project onto two different surfaces which are twisted w…
Magnon transmission across mono-layer graphene junction as a probe of electronic structure
Suman Jyoti De, Sumathi Rao, Ganpathy Murthy
We study magnon transmission across gate-controlled junctions in the manifold of Landau levels in monolayer graphene, in the presence of both spin and valley Zeeman fields. S…
Pairwise annihilation of Weyl nodes induced by magnetic fields in the Hofstadter regime
Faruk Abdulla
Weyl semimetal, which does not require any symmetry except translation for protection, is a robust gapless state of quantum matters in three dimensions. When translation symmetry i…
Quantum spin Hall insulator in proximity with a superconductor: Transition to the Fulde-Ferrell-Larkin-Ovchinnikov state driven by a Zeeman field
Suman Jyoti De, Udit Khanna, Sumathi Rao +1
We investigate the effects of introducing a boost (a Zeeman field parallel to the spin quantization axis) at the proximitized helical edge of a two-dimensional (2D) quantum spin Ha…
Global phase diagram of charge neutral graphene in the quantum Hall regime for generic interactions
Suman Jyoti De, Ankur Das, Sumathi Rao +2
Monolayer graphene at charge neutrality in a quantizing magnetic field is a quantum Hall ferromagnet. Due to the spin and valley (near) degeneracies, there is a plethora of possibl…