Josephson Diode Effect in Supercurrent Interferometers
Souto, Rubén Seoane LU
; Leijnse, Martin
LU
and Schrade, Constantin
(2022)
In Physical Review Letters
129(26).
- Abstract
A Josephson diode is a nonreciprocal circuit element that supports a larger dissipationless supercurrent in one direction than in the other. In this Letter, we propose a class of Josephson diodes based on supercurrent interferometers composed of Andreev bound state Josephson junctions or interacting quantum dot Josephson junctions, which are not diodes themselves but possess nonsinusoidal current-phase relations. We show that such Josephson diodes have several important advantages, like being electrically tunable and requiring only time-reversal breaking by a magnetic flux. We also show that our diodes have a characteristic ac response, revealed by the Shapiro steps. Even the simplest realization of our Josephson diode paradigm that... (More)
A Josephson diode is a nonreciprocal circuit element that supports a larger dissipationless supercurrent in one direction than in the other. In this Letter, we propose a class of Josephson diodes based on supercurrent interferometers composed of Andreev bound state Josephson junctions or interacting quantum dot Josephson junctions, which are not diodes themselves but possess nonsinusoidal current-phase relations. We show that such Josephson diodes have several important advantages, like being electrically tunable and requiring only time-reversal breaking by a magnetic flux. We also show that our diodes have a characteristic ac response, revealed by the Shapiro steps. Even the simplest realization of our Josephson diode paradigm that relies on only two junctions can achieve efficiencies of up to ∼40% and, interestingly, far greater efficiencies are achievable by concatenating interferometer loops. We hope that our Letter will stimulate the search for highly tunable Josephson diode effects in Josephson devices based semiconductor-superconductor hybrids, 2d materials, and topological insulators, where nonsinusoidal current-phase relations were recently observed.
(Less)
- author
- Souto, Rubén Seoane
LU
; Leijnse, Martin
LU
and Schrade, Constantin
- organization
- publishing date
- 2022-12-23
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 129
- issue
- 26
- article number
- 267702
- publisher
- American Physical Society
- external identifiers
-
- scopus:85144614520
- pmid:36608204
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.129.267702
- language
- English
- LU publication?
- yes
- id
- 93366f53-e4f9-4222-911b-33e35bfc3e24
- date added to LUP
- 2023-01-05 11:54:24
- date last changed
- 2024-04-18 18:27:59
@article{93366f53-e4f9-4222-911b-33e35bfc3e24,
abstract = {{<p>A Josephson diode is a nonreciprocal circuit element that supports a larger dissipationless supercurrent in one direction than in the other. In this Letter, we propose a class of Josephson diodes based on supercurrent interferometers composed of Andreev bound state Josephson junctions or interacting quantum dot Josephson junctions, which are not diodes themselves but possess nonsinusoidal current-phase relations. We show that such Josephson diodes have several important advantages, like being electrically tunable and requiring only time-reversal breaking by a magnetic flux. We also show that our diodes have a characteristic ac response, revealed by the Shapiro steps. Even the simplest realization of our Josephson diode paradigm that relies on only two junctions can achieve efficiencies of up to ∼40% and, interestingly, far greater efficiencies are achievable by concatenating interferometer loops. We hope that our Letter will stimulate the search for highly tunable Josephson diode effects in Josephson devices based semiconductor-superconductor hybrids, 2d materials, and topological insulators, where nonsinusoidal current-phase relations were recently observed.</p>}},
author = {{Souto, Rubén Seoane and Leijnse, Martin and Schrade, Constantin}},
issn = {{0031-9007}},
language = {{eng}},
month = {{12}},
number = {{26}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Josephson Diode Effect in Supercurrent Interferometers}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.129.267702}},
doi = {{10.1103/PhysRevLett.129.267702}},
volume = {{129}},
year = {{2022}},
}