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Etching suspended superconducting tunnel junctions from a multilayer

Authors :
Clemens Winkelmann
Laetitia Pascal
Hervé Courtois
Olivier Buisson
B. Gilles
Hung Q. Nguyen
Z. H. Peng
Nano-Electronique Quantique et Spectroscopie (NEEL - QuNES)
Institut Néel (NEEL)
Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)
Circuits électroniques quantiques Alpes (NEEL - QuantECA)
Science et Ingénierie des Matériaux et Procédés (SIMaP)
Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
European Project: 228464,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2008-1,MICROKELVIN(2009)
Nano-Electronique Quantique et Spectroscopie (QuNES)
Circuits électroniques quantiques Alpes (QuantECA)
Source :
Applied Physics Letters, Applied Physics Letters, 2012, 100, pp.252602. ⟨10.1063/1.4729779⟩, Applied Physics Letters, American Institute of Physics, 2012, 100, pp.252602. ⟨10.1063/1.4729779⟩
Publication Year :
2012
Publisher :
AIP Publishing, 2012.

Abstract

A method to fabricate large-area superconducting hybrid tunnel junctions with a suspended central normal metal part is presented. The samples are fabricated by combining photo-lithography and chemical etch of a superconductor—insulator—normal metal multilayer. The process involves few fabrication steps, is reliable and produces extremely high-quality tunnel junctions. Under an appropriate voltage bias, a significant electronic cooling is demonstrated. We analyze semi-quantitatively the thermal behavior of a typical device.

Details

ISSN :
10773118 and 00036951
Volume :
100
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi.dedup.....bf85275eb08e5cb080304960dd10c05f
Full Text :
https://doi.org/10.1063/1.4729779