478 citations · 1.2k across the 9 of their papers we have counts for
9 papers
Microscopic Origin of the Valley Hall Effect in Transition Metal Dichalcogenides Revealed by Wavelength Dependent Mapping
Nicolas Ubrig, Sanghyun Jo, Marc Philippi +4
The band structure of many semiconducting monolayer transition metal dichalcogenides (TMDs) possesses two degenerate valleys, with equal and opposite Berry curvature. It has been p…
Gate-induced Superconductivity in atomically thin MoS2 crystals
Davide Costanzo, Sanghyun Jo, Helmuth Berger +1
When thinned down to the atomic scale, many layered van der Waals materials exhibit an interesting evolution of their electronic properties, whose main aspects can be accounted for…
Electrostatically Induced Superconductivity at the Surface of WS
Sanghyun Jo, Davide Costanzo, Helmuth Berger +1
We investigate transport through ionic liquid gated field effect transistors (FETs) based on exfoliated crystals of semiconducting WS. Upon electron accumulation, at surface de…
Scanning photocurrent microscopy reveals electron-hole asymmetry in ionic liquid-gated WS2 transistors
Nicolas Ubrig, Sanghyun Jo, Helmuth Berger +2
We perform scanning photocurrent microscopy on WS2 ionic liquid-gated field effect transistors exhibiting high-quality ambipolar transport. By properly biasing the gate electrode w…
Mono- and Bilayer WS2 Light-Emitting Transistors
Sanghyun Jo, Nicolas Ubrig, Helmuth Berger +2
We have realized ambipolar ionic liquid gated field-effect transistors based on WS2 mono- and bilayers, and investigated their opto-electronic response. A thorough characterization…
Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction
Dongchan Jeong, Jae-Hyun Choi, Gil-Ho Lee +3
Superconductor-graphene-superconductor (SGS) junction provides a unique platform to study relativistic electrodynamics of Dirac fermions combined with proximity-induced superconduc…