1 citations · 2 across the 17 of their papers we have counts for
20 papers
Tunable flat bands and their signatures in electronic specific heat of an Aharonov-Bohm triangular quantum network
Sanchita Nandi, Santanu K. Maiti
Quantum networks composed of loop-like structures provide a rich platform for exploring electronic transport phenomena and have been widely studied in various contexts. However, th…
Correlated quasiperiodicity enables efficient thermoelectric energy conversion
Swaraj Biswas, Santanu K. Maiti
We investigate a route to enhanced thermoelectric energy conversion in nanoscale systems by exploiting a correlated quasiperiodic energy landscape in a one-dimensional chain couple…
Bias-driven circular currents in a quantum ring: Effects of electron-electron and electron-phonon interactions
Moumita Mondal, Santanu K. Maiti
The phenomenon of bias-driven circular charge and spin currents in a ring nanojunction is investigated in the presence of electron-electron (e-e) and electron-phonon (e-ph) interac…
Interplay of spin-orbit coupling and magnetic chirality: Multidirectional spin polarization in a helical antiferromagnet
Kallol Mondal, Sudin Ganguly, Santanu K. Maiti
We investigate spin-dependent transport in a non-collinear helical antiferromagnet in the presence of spin-orbit coupling within a tight-binding framework. Using the Landauer-Bütti…
Generation of pure spin currents via nonadiabatic quantum pumping in an antiferromagnetic chain
Leila Eslami, Fatemeh Bourbour, Somaieh Ahmadi +1
In this study, quantum spin pumping in an antiferromagnetic chain driven by time-dependent potential is investigated. The aim is to explore the possibility of generating and contro…
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…
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…
Transport characteristics in Hermitian and non-Hermitian Fibonacci rings: A comparative study
Souvik Roy, Santanu K. Maiti
We present an extensive theoretical analysis of transport and circular currents and the associated induced magnetic fields in Fibonacci rings, explored in both Hermitian and non-He…
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…
Persistent Charge and Spin Currents in a Ferromagnetic Hatano-Nelson Ring
Sourav Karmakar, Sudin Ganguly, Santanu K. Maiti
We investigate persistent charge and spin currents in a ferromagnetic Hatano-Nelson ring with anti-Hermitian intradimer hopping, where non-reciprocal hopping generates a synthetic…
Anomalous Power Factor Enhancement and Local Structural Transition in Ni-Doped TiCoSb
Suman Mahakal, Pallabi Sardar, Diptasikha Das +6
We report a significant enhancement (~269%) in the power factor (PF) and a local structural transition in Ni-doped TiCoSb samples (TiCo_{1-x}Ni_xSb, (x= 0.0, 0.01, 0.02, 0.03, 0.04…
Spin caloritronics in collinear ferromagnetic helical structures under irradiation
Sudin Ganguly, Moumita Dey, Santanu K. Maiti
We study the charge and spin-dependent thermoelectric response of a ferromagnetic helical system irradiated by arbitrarily polarized light, using a tight-binding framework and the…
Photo-induced directional transport in extended SSH chains
Usham Harish Kumar Singha, Kallol Mondal, Sudin Ganguly +1
We investigate the current-voltage characteristics of an extended Su-Schrieffer-Heeger (SSH) chain under irradiation by arbitrarily polarized light, demonstrating its potential as…
Reentrant localization in a quasiperiodic chain with correlated hopping sequences
Sourav Karmakar, Sudin Ganguly, Santanu K. Maiti
Quasiperiodic systems are known to exhibit localization transitions in low dimensions, wherein all electronic states become localized beyond a critical disorder strength. Interesti…
Anomalous persistent current in a 1D dimerized ring with aperiodic site potential: Non-interacting and interacting cases
Souvik Roy, Santanu K. Maiti, David Laroze
In this work, we investigate the magnetic response by examining flux-driven circular currents in a Su-Schrieffer-Heeger (SSH) tight-binding (TB) ring threaded by an Aharonov-Bohm (…
Flux-Driven Circular Current in a Non-Hermitian Dimerized Aharonov-Bohm Ring: Impact of Physical Gain and Loss
Souvik Roy, Santanu K. Maiti
In the present theoretical work, we numerically explore magnetic response of a tight-binding dimerized ring subjected to Aharonov-Bohm (AB) flux and environmental interactions. Spe…
Persistent current in a non-Hermitian Hatano-Nelson ring: Disorder-induced amplification
Sudin Ganguly, Santanu K. Maiti
Non-reciprocal hopping induces a synthetic magnetic flux which leads to the non-Hermitian Aharonov-Bohm effect. Since non-Hermitian Hamiltonians possess both real and imaginary eig…