50 citations · 251 across the 12 of their papers we have counts for
12 papers
Probing edge state conductance in ultra-thin topological insulator films
Arthur Leis, Michael Schleenvoigt, Kristof Moors +8
Quantum spin Hall (QSH) insulators have unique electronic properties, comprising a band gap in their two-dimensional interior and one-dimensional spin-polarized edge states in whic…
Lifting the spin-momentum locking in ultra-thin topological insulator films
Arthur Leis, Michael Schleenvoigt, Vasily Cherepanov +6
Three-dimensional (3D) topological insulators (TIs) are known to carry 2D Dirac-like topological surface states in which spin-momentum locking prohibits backscattering. When thinne…
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 structures of tellurium on Si(111)-(7x7) studied by low-energy electron diffraction and scanning tunneling microscopy
Felix Lüpke, Jiří Doležal, Vasily Cherepanov +3
The Te-covered Si(111) surface has received recent interest as a template for the epitaxy of van der Waals (vdW) materials, e.g. BiTe. Here, we report the formation of a Te…
Low Vibration Laboratory with a Single-Stage Vibration Isolation for Microscopy Applications
Bert Voigtländer, Peter Coenen, Vasily Cherepanov +3
The construction and the vibrational performance of a low vibration laboratory for microscopy applications comprising a 100 ton floating foundation supported by passive pneumatic i…
Four-point probe measurements using current probes with voltage feedback to measure electric potentials
F. Lüpke, D. Cuma, S. Korte +2
We present a four-point probe resistance measurement technique which uses four equivalent current measuring units, resulting in minimal hardware requirements and corresponding sour…
Electrical resistance of individual defects at a topological insulator surface
Felix Lüpke, Markus Eschbach, Tristan Heider +10
Three-dimensional topological insulators host surface states with linear dispersion, which manifest as a Dirac cone. Nanoscale transport measurements provide direct access to the t…
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…
Scanning tunneling potentiometry implemented into a multi-tip setup by software
F. Lüpke, S. Korte, V. Cherepanov +1
We present a multi-tip scanning tunneling potentiometry technique that can be implemented into existing multi-tip scanning tunneling microscopes without hardware changes. The resul…
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…
Etched graphene quantum dots on hexagonal boron nitride
S. Engels, A. Epping, C. Volk +6
We report on the fabrication and characterization of etched graphene quantum dots (QDs) on hexagonal boron nitride (hBN) and SiO2 with different island diameters. We perform a stat…
Magic Islands and Barriers to Attachment: A Si/Si(111)7x7 Growth Model
J. Myslivecek, T. Jarolimek, P. Smilauer +2
Surface reconstructions can drastically modify growth kinetics during initial stages of epitaxial growth as well as during the process of surface equilibration after termination of…