This title appears in the Scientific Report :
2021
Please use the identifier:
http://hdl.handle.net/2128/27215 in citations.
Please use the identifier: http://dx.doi.org/10.1038/s41467-021-21042-5 in citations.
Flux periodic oscillations and phase-coherent transport in GeTe nanowire-based devices
Flux periodic oscillations and phase-coherent transport in GeTe nanowire-based devices
Despite the fact that GeTe is known to be a very interesting material for applications in thermoelectrics and for phase-change memories, the knowledge on its low-temperature transport properties is only limited. We report on phase-coherent phenomena in the magnetotransport of GeTe nanowires. From un...
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Personal Name(s): | Zhang, Jinzhong |
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Tse, Pok-Lam / Jalil, Abdur-Rehman / Kölzer, Jonas / Rosenbach, Daniel / Luysberg, Martina / Panaitov, Gregory / Lüth, Hans / Hu, Zhigao / Grützmacher, Detlev / Lu, Jia Grace / Schäpers, Thomas (Corresponding author) | |
Contributing Institute: |
Bioelektronik; IBI-3 |
Published in: | Nature Communications, 12 (2021) 1, S. 754 |
Imprint: |
[London]
Nature Publishing Group UK
2021
|
DOI: |
10.1038/s41467-021-21042-5 |
Document Type: |
Journal Article |
Research Program: |
Molecular and Cellular Information Processing |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/s41467-021-21042-5 in citations.
Despite the fact that GeTe is known to be a very interesting material for applications in thermoelectrics and for phase-change memories, the knowledge on its low-temperature transport properties is only limited. We report on phase-coherent phenomena in the magnetotransport of GeTe nanowires. From universal conductance fluctuations measured on GeTe nanowires with Au contacts, a phase-coherence length of about 280 nm at 0.5 K is determined. The distinct phase-coherence is confirmed by the observation of Aharonov–Bohm type oscillations for parallel magnetic fields. We interpret the occurrence of these magnetic flux-periodic oscillations by the formation of a tubular hole accumulation layer. For Nb/GeTe-nanowire/Nb Josephson junctions we obtained a critical current of 0.2 μA at 0.4 K. By applying a perpendicular magnetic field the critical current decreases monotonously with increasing field, whereas in a parallel field the critical current oscillates with a period of the magnetic flux quantum confirming the presence of a tubular hole channel. |