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23 papers
Challenges and Insights in Growing Epitaxial FeSn Thin Films on GaAs(111) substrate Using Molecular Beam Epitaxy
P. Chatterjee, M. Nord, J. He +2
FeSn is a room-temperature antiferromagnet composed of alternating Fe3Sn kagome layers and honeycomb Sn layers. Its distinctive lattice allows the formation of linearly dispersing…
Proximity Induced Superconductivity in CdTe-HgTe Core-Shell Nanowires
Jan Hajer, Maximilian Kessel, Christoph Brüne +3
In this letter we report on proximity superconductivity induced in CdTe-HgTe core-shell nanowires, a quasi-one-dimensional heterostructure of the topological insulator HgTe. We dem…
Residual strain in free-standing CdTe nanowires overgrown with HgTe
M. Kessel, L. Lunczer, N. V. Tarakina +3
We investigate the crystal properties of CdTe nanowires overgrown with HgTe. Scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) confirm, that t…
Transport spectroscopy of induced superconductivity in the three-dimensional topological insulator HgTe
Jonas Wiedenmann, Eva Liebhaber, Johannes Kübert +6
The proximity-induced superconducting state in the 3-dimensional topological insulator HgTe has been studied using electronic transport of a normal metal-superconducting point cont…
Observation of Volkov-Pankratov states in topological HgTe heterojunctions using high-frequency compressibility
A. Inhofer, S. Tchoumakov, B. A. Assaf +13
It is well established that topological insulators sustain Dirac fermion surface states as a consequence of band inversion in the bulk. These states have a helical spin polarizatio…
CdTe-HgTe core-shell nanowire growth controlled by RHEED
M. Kessel, J. Hajer, G. Karczewski +4
We present results on the growth of CdTe-HgTe core-shell nanowires, a realization of a quasi one-dimensional heterostructure of the topological insulator HgTe. The growth is a two…