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  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., et al. (2018). Proximity-Induced Superconductivity and Quantum Interference in Topological Crystalline Insulator SnTe Thin-Film Devices. Nano Letters, 18(2), 1264-1268. doi:10.1021/acs.nanolett.7b04870.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-DD09-E Version Permalink: http://hdl.handle.net/21.11116/0000-0000-DD0B-C
Genre: Journal Article

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 Creators:
Klett, Robin1, Author
Schonle, Joachim1, Author
Becker, Andreas1, Author
Dyck, Denis1, Author
Borisov, Kiril1, Author
Rott, Karsten1, Author
Ramermann, Daniela1, Author
Bueker, Bjoern1, Author
Haskenhoff, Jan1, Author
Krieft, Jan1, Author
Huebner, Torsten1, Author
Reimer, Oliver1, Author
Shekhar, Chandra2, Author              
Schmalhorst, Jan-Michael1, Author
Huetten, Andreas1, Author
Felser, Claudia1, Author
Wernsdorfer, Wolfgang1, Author
Reiss, Guenter1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              

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 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 2 pi periodicity, possibly dominated by the bulk conductivity.

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Language(s): eng - English
 Dates: 2018-01-242018-01-24
 Publication Status: Published in print
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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 18 (2) Sequence Number: - Start / End Page: 1264 - 1268 Identifier: ISSN: 1530-6984
CoNE: /journals/resource/110978984570403