Proximity-Induced Superconductivity and Quantum Interference in Topological Crystalline Insulator SnTe Thin-Film Devices
Klett R, Schonle J, Becker A, Dyck D, Borisov K, Rott K, Ramermann D, Bueker B, Haskenhoff J, Krieft J, Huebner T, Reimer O, Shelkar C, Schmalhorst JM, Huetten A, Felser C, Wernsdorfer W, Reiss G (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 18
Pages Range: 1264-1268
Journal Issue: 2
DOI: 10.1021/acs.nanolett.7b04870
Abstract
Topological crystalline insulators represent a new state of matter, in which the electronic transport is governed by mirror-symmetry protected Dirac surface states. Due to the helical spin-polarization of these surface states, the proximity of topological crystalline matter to a nearby superconductor is predicted to induce unconventional superconductivity and, thus, to host Majorana physics. We report on the preparation and characterization of Nb-based superconducting quantum interference devices patterned on top of topological crystalline insulator SnTe thin films. The SnTe films show weak anti-localization, and the weak links of the superconducting quantum interference devices (SQUID) exhibit fully gapped proximity-induced superconductivity. Both properties give a coinciding coherence length of 120 nm. The SQUID oscillations induced by a magnetic field show 2π periodicity, possibly dominated by the bulk conductivity.
Involved external institutions
Universität Bielefeld
Germany (DE)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Germany (DE)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
Karlsruhe Institute of Technology (KIT)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Klett, R., Schonle, J., Becker, A., Dyck, D., Borisov, K., Rott, K.,... Reiss, G. (2018). Proximity-Induced Superconductivity and Quantum Interference in Topological Crystalline Insulator SnTe Thin-Film Devices. Nano Letters, 18(2), 1264-1268. https://doi.org/10.1021/acs.nanolett.7b04870
MLA:
Klett, Robin, et al. "Proximity-Induced Superconductivity and Quantum Interference in Topological Crystalline Insulator SnTe Thin-Film Devices." Nano Letters 18.2 (2018): 1264-1268.
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