160 citations · 1.2k across the 46 of their papers we have counts for
5 papers · 1 filter
Electronic structure and magnetism in P4/nmm KCoO2
Ozan Dernek, Santosh Kumar Radha, Jerome Jackson +1
KCoO2 has been found in 1975 to exist in a unique structure with P4/nmm spacegroup with Co in a square pyramidal coordination with the Co atoms in the plane linked by O in a square…
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…
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…
Rare-earth mononitrides
Franck Natali, Ben J. Ruck, Natalie O. V. Plank +4
When the rare earth mononitrides (RENs) first burst onto the scientific scene in the middle of last century, there were feverish dreams that their strong magnetic moment would affo…
Ferromagnetic redshift of the optical gap in GdN
H. J. Trodahl, A. R. H. Preston, J. Zhong +4
We report measurements of the optical gap in a GdN film at temperatures from 300 to 6K, covering both the paramagnetic and ferromagnetic phases. The gap is 1.31eV in the paramagnet…