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12 papers · 2 filters
surface reconstruction and electronic structure of BaSnO film
Shoresh Soltani, Sungyun Hong, Bongju Kim +6
We studied surface and electronic structures of barium stannate (BaSnO) thin-film by low energy electron diffraction (LEED), and angle-resolved photoemission spectroscopy (ARPE…
Gate tunable optical absorption and band structure of twisted bilayer graphene
Kwangnam Yu, Van Luan Nguyen, Tae Soo Kim +5
We report the infrared transmission measurement on electrically gated twisted bilayer graphene. The optical absorption spectrum clearly manifests the dramatic changes such as the s…
Spectroscopic studies of atomic defects and bandgap renormalization in semiconducting monolayer transition metal dichalcogenides
Tae Young Jeong, Hakseong Kim, Sang-Jun Choi +5
Assessing atomic defect states and their ramifications on the electronic properties of two dimensional van der Waals semiconducting transition metal dichalcogenides (SC TMDs) is th…
Controllable thickness inhomogeneity and Berry-curvature-engineering of anomalous Hall effect in SrRuO3 ultrathin films
Lingfei Wang, Qiyuan Feng, Han Gyeol Lee +3
In quantum matters hosting electron-electron correlation and spin-orbit coupling, spatial inhomogeneities, arising from competing ground states, can be essential for determining an…
Symmetry-Protected Degeneracies in the Electronic Band Structure of Oxidized Black Phosphorous
Seoung-Hun Kang, Jejune Park, Sungjong Woo +1
We explore the oxidation of a single layer of black phosphorous using ab initio density functional theory calculation. We search for the equilibrium structures of phosphorene oxide…
Mapping the structural transitions controlled by the trilinear coupling in Ca3-xSrxTi2O7
Marie Kratochvilova, Fei-Ting Huang, Maria-Teresa Fernandez Diaz +7
We present the results of the high-temperature neutron and x-ray diffraction experiments on the Ca3-xSrxTi2O7 (x = 0.5, 0.8, 0.85, 0.9) compounds. The ferro- to paraelectric transi…