Ritwik Das

activity

20242026

collaborators

5 papers

cond-mat.str-el2026

Spin-orbit driven $J_{e f f} = 1/2$ magnetism in a d $^{7}$ triangular-lattice monolayer cobaltate

Ritwik Das, Soumen Basak, Mohammad Rezwan Habib +1

Recent theoretical and experimental advances have identified cobaltates with a high-spin $d^{7}$ electronic configuration as promising hosts for spin-orbit entangled $J_{e f f} = 1/2$ …

cond-mat.str-el2026

Magnetization-Tunable Topological Phase Transitions in Ferromagnetic Kagome Monolayers of Co $_{3}$ X $_{3}$ Y $_{2}$ ( $X = Sn, Pb$ ; $Y = S, Se$ )

Ritwik Das, Arkamitra Sen, Indra Dasgupta

The quantum anomalous Hall effect in magnetic kagome materials has emerged as a versatile platform for dissipationless electronic and spintronic devices. In this work, we demonstra…

cond-mat.mtrl-sci2025

High-fidelity electronic structure and properties of InSb: $G_{0} W_{0}$ and Bayesian-optimized hybrid functionals and DFT+ $U$ approaches

Ritwik Das, Anne-Sophie Grimault-Jacquin, FrÃ©dÃ©ric Aniel

This study presents a refined approach to computing the electronic structure of indium antimonide (InSb) using advanced \textit{ab initio} techniques with the In and Sb $4 d^{10}$ s…

cond-mat.str-el2025

From Density Functional Theory to Spin Hamiltonians: Magnetism in $d^{5}$ Honeycomb Compound OsCl $_{3}$

Ritwik Das, Indra Dasgupta

Magnetism in strongly correlated honeycomb systems with $d^{5}$ electronic configuration has garnered significant attention due to its potential to realize the Kitaev spin liquid sta…

physics.comp-ph2024

BMach: a Bayesian machine for optimizing Hubbard U parameters in DFT+U with machine learning

Ritwik Das

Accurately determining the effective Hubbard parameter $(U_{e f f})$ in Density Functional Theory plus U (DFT+U) remains a significant challenge, often relying on empirical methods o…

Spin-orbit driven Jeff​=1/2 magnetism in a d7 triangular-lattice monolayer cobaltate

Magnetization-Tunable Topological Phase Transitions in Ferromagnetic Kagome Monolayers of Co3​X3​Y2​ (X=Sn,Pb; Y=S,Se)

High-fidelity electronic structure and properties of InSb: G0​W0​ and Bayesian-optimized hybrid functionals and DFT+U approaches

From Density Functional Theory to Spin Hamiltonians: Magnetism in d5 Honeycomb Compound OsCl3​

BMach: a Bayesian machine for optimizing Hubbard U parameters in DFT+U with machine learning

Spin-orbit driven $J_{e f f} = 1/2$ magnetism in a d $^{7}$ triangular-lattice monolayer cobaltate

Magnetization-Tunable Topological Phase Transitions in Ferromagnetic Kagome Monolayers of Co $_{3}$ X $_{3}$ Y $_{2}$ ( $X = Sn, Pb$ ; $Y = S, Se$ )

High-fidelity electronic structure and properties of InSb: $G_{0} W_{0}$ and Bayesian-optimized hybrid functionals and DFT+ $U$ approaches

From Density Functional Theory to Spin Hamiltonians: Magnetism in $d^{5}$ Honeycomb Compound OsCl $_{3}$