15 papers
Designing all possible logic gates in phononic lattices: A theoretical study
Swaraj Biswas, Santanu K. Maiti
We propose a scheme for realizing thermal logic gates at the nanoscale using a phononic ring system. Two atomic sites, placed in close proximity to the ring, serve as the inputs fo…
Spin-dependent electron transfer through a ring-wire coupled junction: Role of in-plane electric field
Prabhab Patra, Santanu K. Maiti
We study spin-dependent transport in a hybrid magnetic system, where a non-magnetic (NM) wire is coupled to a side-attached antiferromagnetic (AFM) mesoscopic ring, placed between…
Quantum charge pumping in helical systems: A comparative study of short- and long-range hopping
Leila Eslami, Santanu K. Maiti, Fatemeh Bourbour
Using the Keldysh non-equilibrium Green's function approach, we investigate charge pumping through a single-stranded helical structure described by a tight-binding model that inclu…
Exact and mean-field analysis of the role of Hubbard interactions on flux driven circular current in a quantum ring
Rahul Samanta, Santanu K. Maiti, Shreekantha Sil
We investigate circular current in both ordered and disordered Hubbard quantum rings threaded by magnetic flux, employing exact diagonalization and the Hartree-Fock mean-field appr…
Interaction-controlled localization in one-dimensional chain: From edges to domain walls
Rahul Samanta, Sudin Ganguly, Santanu K. Maiti
Using Hartree-Fock mean-field approach, we study the role of on-site () and extended () Hubbard interactions on the existence and evolution of edge modes in a half-filled Su-…
First-principles and tight-binding analysis of thermoelectricity in irradiated WSe
Cynthia Ihuoma Osuala, Tanu Choudhary, Raju K. Biswas +2
Electronic and thermoelectric transport in zigzag monolayer WSe nanoribbons are studied under monochromatic irradiation. The electronic structure is described within a six-orbi…