Okan Köksal

The dice lattice, containing a stack of three triangular lattices, has been proposed to exhibit nontrivial flat bands with nonzero Chern numbers, but unlike the honeycomb lattice i…

cond-mat.mtrl-sci2018

Temperature-dependent spin-resolved electronic structure of EuO thin films

Tristan Heider, Timm Gerber, Okan Köksal +10

The electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy (spin-ARPES) and density functional…

cond-mat.mtrl-sci2017

Confinement-driven electronic and topological phases in corundum-derived $3 d$ -oxide honeycomb lattices

Okan Köksal, Santu Baidya, Rossitza Pentcheva

Using density functional theory calculations including an on-site Coulomb term, we explore electronic and possibly topologically nontrivial phases in $3 d$ transition metal oxide ho…

High Chern numbers in a perovskite-derived dice lattice (LaXO3​)3​/(LaAlO3​)3​(111) with X= Ti, Mn and Co

Temperature-dependent spin-resolved electronic structure of EuO thin films

Confinement-driven electronic and topological phases in corundum-derived 3d-oxide honeycomb lattices

High Chern numbers in a perovskite-derived dice lattice (La $X$ O $_{3}$ ) $_{3}$ /(LaAlO $_{3}$ ) $_{3}$ (111) with $X =$ Ti, Mn and Co

Confinement-driven electronic and topological phases in corundum-derived $3 d$ -oxide honeycomb lattices