45 citations · 150 across the 8 of their papers we have counts for
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A miniature evaporator for in-operando deposition of isolated atoms in a low-temperature scanning tunneling microscope
Jeongmin Oh, Hermann Osterhage, Vasily Cherepanov +5
Depositing dilute atomic ensembles onto cold samples is challenging in low-temperature scanning tunneling microscopes (STM) because radiation shields and restricted internal geomet…
Evidence for local spots of viscous electron flow in graphene at moderate mobility
Sayanti Samaddar, Jeff Strasdas, Kevin Janßen +8
Dominating electron-electron scattering enables viscous electron flow exhibiting hydrodynamic current density patterns such as Poiseuille profiles or vortices. The viscous regime h…
Parasitic conduction channels in topological insulator thin films
Sven Just, Felix Lüpke, Vasily Cherepanov +2
Thin films of topological insulators (TI) usually exhibit multiple parallel conduction channels for the transport of electrical current. Beside the topologically protected surface…
Surface Conductivity of Si(100) and Ge(100) Surfaces Determined from Four-Point Transport Measurements Using an Analytical N-Layer Conductance Model
Sven Just, Helmut Soltner, Stefan Korte +2
An analytical N-layer model for charge transport close to a surface is derived from the solution of Poisson's equation and used to describe distance-dependent electrical four-point…
Surface and Step Conductivities on Si(111) Surfaces
Sven Just, Marcus Blab, Stefan Korte +3
Four-point measurements using a multi-tip scanning tunneling microscope (STM) are carried out in order to determine surface and step conductivities on Si(111) surfaces. In a first…
Preferential antiferromagnetic coupling of vacancies in graphene on SiO_2: Electron spin resonance and scanning tunneling spectroscopy
S. Just, S. Zimmermann, V. Kataev +3
Monolayer graphene grown by chemical vapor deposition and transferred to SiO_2 is used to introduce vacancies by Ar^+ ion bombardment at a kinetic energy of 50 eV. The density of d…
Evidence for topological band inversion of the phase change material Ge2Sb2Te5
Christian Pauly, Marcus Liebmann, Alessandro Giussani +8
We present an angle-resolved photoemission study of a ternary phase change material, namely Ge2Sb2Te5, epitaxially grown on Si(111) in the metastable cubic phase. The observed uppe…