A ballistic two-dimensional-electron-gas Andreev interferometer
Abstract
We report the realization and investigation of a ballistic Andreev interferometer based on an InAs two dimensional electron gas coupled to a superconducting Nb loop. We observe strong magnetic modulations in the voltage drop across the device due to quasiparticle interference within the weak-link. The interferometer exhibits flux noise down to ∼80 μΦ{sub 0}/√(Hz) and a robust behavior in temperature with voltage oscillations surviving up to ∼7 K. Besides this remarkable performance, the device represents a crucial first step for the realization of a fully-tunable ballistic superconducting magnetometer and embodies a potential advanced platform for the investigation of Majorana bound states, non-local entanglement of Cooper pairs, as well as the manipulation and control of spin triplet correlations.
- Authors:
-
- CNR-IOM, Laboratorio TASC, Area Science Park, I-34149 Trieste (Italy)
- Publication Date:
- OSTI Identifier:
- 22299908
- Resource Type:
- Journal Article
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 104; Journal Issue: 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BOUND STATE; COOPER PAIRS; CORRELATIONS; ELECTRIC POTENTIAL; ELECTRON GAS; EQUIPMENT; INDIUM ARSENIDES; INTERFERENCE; INTERFEROMETERS; MODULATION; OSCILLATIONS; QUANTUM ENTANGLEMENT; SPIN; TEMPERATURE RANGE 0000-0013 K; TRIPLETS; VOLTAGE DROP
Citation Formats
Amado, M., E-mail: mario.amadomontero@sns.it, Fornieri, A., Sorba, L., Giazotto, F., E-mail: f.giazotto@sns.it, and Biasiol, G. A ballistic two-dimensional-electron-gas Andreev interferometer. United States: N. p., 2014.
Web. doi:10.1063/1.4884952.
Amado, M., E-mail: mario.amadomontero@sns.it, Fornieri, A., Sorba, L., Giazotto, F., E-mail: f.giazotto@sns.it, & Biasiol, G. A ballistic two-dimensional-electron-gas Andreev interferometer. United States. https://doi.org/10.1063/1.4884952
Amado, M., E-mail: mario.amadomontero@sns.it, Fornieri, A., Sorba, L., Giazotto, F., E-mail: f.giazotto@sns.it, and Biasiol, G. 2014.
"A ballistic two-dimensional-electron-gas Andreev interferometer". United States. https://doi.org/10.1063/1.4884952.
@article{osti_22299908,
title = {A ballistic two-dimensional-electron-gas Andreev interferometer},
author = {Amado, M., E-mail: mario.amadomontero@sns.it and Fornieri, A. and Sorba, L. and Giazotto, F., E-mail: f.giazotto@sns.it and Biasiol, G.},
abstractNote = {We report the realization and investigation of a ballistic Andreev interferometer based on an InAs two dimensional electron gas coupled to a superconducting Nb loop. We observe strong magnetic modulations in the voltage drop across the device due to quasiparticle interference within the weak-link. The interferometer exhibits flux noise down to ∼80 μΦ{sub 0}/√(Hz) and a robust behavior in temperature with voltage oscillations surviving up to ∼7 K. Besides this remarkable performance, the device represents a crucial first step for the realization of a fully-tunable ballistic superconducting magnetometer and embodies a potential advanced platform for the investigation of Majorana bound states, non-local entanglement of Cooper pairs, as well as the manipulation and control of spin triplet correlations.},
doi = {10.1063/1.4884952},
url = {https://www.osti.gov/biblio/22299908},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 24,
volume = 104,
place = {United States},
year = {Mon Jun 16 00:00:00 EDT 2014},
month = {Mon Jun 16 00:00:00 EDT 2014}
}