160 citations · 1.2k across the 46 of their papers we have counts for
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Topological obstructed atomic limit by annihilating Dirac fermions
Santosh Kumar Radha, Walter R. L. Lambrecht
We show that annihilating a pair of Dirac fermions implies a topological transition from the critical semi-metallic phase to an Obstructed Atomic Limit (OAL) insulator phase instea…
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…
Electron microscopy and spectroscopic study of structural changes, electronic properties and conductivity in annealed LiCoO
Halyna Volkova, Kevin Pachuta, Kyle Crowley +6
Chemically exfoliated nanoscale few-layer thin LiCoO samples are studied as function of annealing at various temperatures, using transmission electron microscopy (TEM) and…
Topological quantum switch and controllable quasi 1D wires in antimonene
Santosh Kumar Radha, Walter R. L. Lambrecht
Based on the recently found non-trivial topology of buckled antimonene, we propose the conceptual design of a quantized switch that is protected by topology and a mechanism to crea…
Buckled honeycomb group--- symmetric higher order topological insulators
Santosh Kumar Radha, Walter R. L. Lambrecht
Higher Order Topological Insulators (HOTI) are -spatial dimensional systems featuring topologically protected gap-less states at their -dimensional boundaries. With the h…
Spin-polarized two-dimensional electron/hole gases on LiCoO layers
Santosh Kumar Radha, Walter R. L. Lambrecht
First-principles calculations show the formation of a 2D spin polarized electron (hole) gas on the Li (CoO) terminated surfaces of finite slabs down to a monolayer of LiCoO…