50 citations · 186 across the 11 of their papers we have counts for
11 papers
Suspended dry pick-up and flip-over assembly for van der Waals heterostructures with ultra-clean surfaces
Keda Jin, Tobias Wichmann, Sabine Wenzel +10
Van der Waals heterostructures are an excellent platform for studying intriguing interface phenomena, such as moiré and proximity effects. Surface science techniques like scanning…
Anti-site defect-induced disorder in compensated topological magnet MnBiSbTe
Felix Lüpke, Marek Kolmer, Jiaqiang Yan +5
The gapped Dirac-like surface states of compensated magnetic topological insulator MnBiSbTe (MBST) are a promising host for exotic quantum phenomena such as the qua…
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…
Local manifestations of thickness dependent topology and axion edge state in topological magnet MnBiTe
Felix Lüpke, Anh D. Pham, Yi-Fan Zhao +9
The interplay of non-trivial band topology and magnetism gives rise to a series of exotic quantum phenomena, such as the emergent quantum anomalous Hall (QAH) effect and topologica…
Quantum spin Hall edge states and interlayer coupling in twisted-bilayer WTe
Felix Lüpke, Dacen Waters, Anh D. Pham +4
The quantum spin Hall (QSH) effect, characterized by topologically protected spin-polarized edge states, was recently demonstrated in monolayers of the transition metal dichalcogen…
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…
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…
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…