31 citations · 84 across the 18 of their papers we have counts for
11 papers · 1 filter
Quasiparticle band structure and excitonic optical response in V2O5 bulk and monolayer
Claudio Garcia, Santosh Kumar Radha, Swagata Acharya +1
The electronic band structure of VO is calculated using an all-electron quasiparticle self-consistent (QS) method, including electron-hole ladder diagrams in the scree…
Knitting quantum knots: Topological phase transitions in Two-Dimensional systems
Santosh Kumar Radha
We start by describing a symmetry enforced nodal line semi-metal (NLSM) in the 2D flat form of honeycomb Group - V and its non trivial thermo-electric response. We will then procee…
Optical response and band structure of LiCoO2 including electron-hole interaction effects
Santosh Kumar Radha, Walter R. L. Lambrecht, Brian Cunningham +3
The optical response functions and band structures of LiCoO are studied at different levels of approximation, from density functional theory (DFT) in the generalized gradient a…
Ultrathin 2D-oxides: a perspective on fabrication, structure, defect, transport, electron and phonon properties
Santosh Kumar Radha, Kyle Crowley, Brian A. Holler +7
In the field of atomically thin 2D materials, oxides are relatively unexplored in spite of the large number of layered oxide structures amenable to exfoliation. There is an increas…
Distortion modes in halide perovskites: to twist or to stretch, a matter of tolerance and lone pairs
Santosh Kumar Radha, Churna Bhandar, Walter R. L. Lambrech
Using first-principles calculations, we show that CsBX halides with B=Sn or Pb undergo octahedral rotation distortions, while for B=Ge and Si, they undergo a ferro-electric rho…
Quasiparticle self-consistent band structures and high-pressure phase transitions of LiGaO and NaGaO$_2
Santosh Kumar Radha, Amol Ratnaparkhe, Walter R. L. Lambrecht
Quasi-particle self-consistent calculations are presented for the band structures of LiGaO2 and NaGaO2 in the orthorhombic tetrahedrally coordinated crystal structure…