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@ARTICLE{Zellekens:887745,
author = {Zellekens, Patrick and Deacon, Russell and Perla, Pujitha
and Fonseka, H. Aruni and Mörstedt, Timm and Hindmarsh,
Steven A. and Bennemann, Benjamin and Lentz, Florian and
Lepsa, Mihail I. and Sanchez, Ana M. and Grützmacher,
Detlev and Ishibashi, Koji and Schäpers, Thomas},
title = {{H}ard-{G}ap {S}pectroscopy in a {S}elf-{D}efined
{M}esoscopic {I}n{A}s/{A}l {N}anowire {J}osephson
{J}unction},
journal = {Physical review applied},
volume = {14},
number = {5},
issn = {2331-7019},
address = {College Park, Md. [u.a.]},
publisher = {American Physical Society},
reportid = {FZJ-2020-04402},
pages = {054019},
year = {2020},
abstract = {Superconductor-semiconductor-nanowire hybrid structures can
serve as versatile building blocks to realize Majorana
circuits or superconducting qubits based on quantized levels
such as Andreev qubits. For all these applications, it is
essential that the superconductor-semiconductor interface is
as clean as possible. Furthermore, the shape and dimensions
of the superconducting electrodes need to be precisely
controlled. We fabricated self-defined InAs/Al core-shell
nanowire junctions by a fully in-situ approach, which meet
all these criteria. Transmission electron microscopy
measurements confirm the sharp and clean interface between
the nanowire and the in-situ deposited Al electrodes that
are formed by means of shadow evaporation. Furthermore, we
report on tunnel spectroscopy, gate, and magnetic
field-dependent transport measurements. The achievable short
junction lengths, the observed hard gap, and the magnetic
field robustness make this hybrid structure very attractive
for applications that rely on a precise control of the
number of subgap states, like Andreev qubits or topological
systems.},
cin = {PGI-9 / PGI-10 / JARA-FIT / HNF},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-10-20170113 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)HNF-20170116},
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:000587961000002},
doi = {10.1103/PhysRevApplied.14.054019},
url = {https://juser.fz-juelich.de/record/887745},
}