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@ARTICLE{Zhang:877890,
author = {Zhang, Jinzhong and Jalil, Abdur Rehman and Tse, Pok-Lam
and Kölzer, Jonas and Rosenbach, Daniel and Valencia, Helen
and Luysberg, Martina and Mikulics, Martin and Panaitov,
Gregory and Grützmacher, Detlev and Hu, Zhigao and Lu, Jia
Grace and Schäpers, Thomas},
title = {{P}roximity-{E}ffect-{I}nduced {S}uperconductivity in
{N}b/{S}b2{T}e3 -{N}anoribbon/{N}b {J}unctions},
journal = {Annalen der Physik},
volume = {532},
number = {8},
issn = {0003-3804},
address = {Leipzig},
publisher = {Barth88001},
reportid = {FZJ-2020-02495},
pages = {2000273 -},
year = {2020},
abstract = {Nanohybrid superconducting junctions using antimony
telluride (Sb2Te3) topological insulator nanoribbons and Nb
superconducting electrodes are fabricated using electron
beam lithography and magnetron sputtering. The effects of
bias current, temperature, and magnetic field on the
transport properties of the junctions in a four‐terminal
measurement configuration are investigated. Two features are
observed. First, the formation of a Josephson weak‐link
junction. The junction is formed by proximity‐induced
areas in the nanoribbon right underneath the inner Nb
electrodes which are connected by the few tens of nanometers
short Sb2Te3 bridge. At 0.5 K a critical current of 0.15 µA
is observed. The decrease of the supercurrent with
temperature is explained in the framework of a diffusive
junction. Furthermore, the Josephson supercurrent is found
to decrease monotonously with the magnetic field indicating
that the structure is in the small‐junction limit. As a
second feature, a transition is also observed in the
differential resistance at larger bias currents and larger
magnetic fields, which is attributed to the suppression of
the proximity‐induced superconductive state in the
nanoribbon area underneath the Nb electrodes.},
cin = {PGI-9 / ER-C-1 / ER-C-2 / IBI-3},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)ER-C-1-20170209 /
I:(DE-Juel1)ER-C-2-20170209 / I:(DE-Juel1)IBI-3-20200312},
pnm = {522 - Controlling Spin-Based Phenomena (POF3-522) / DFG
project 390534769 - EXC 2004: Materie und Licht für
Quanteninformation (ML4Q) (390534769)},
pid = {G:(DE-HGF)POF3-522 / G:(GEPRIS)390534769},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000546665300001},
doi = {10.1002/andp.202000273},
url = {https://juser.fz-juelich.de/record/877890},
}