Flux-tunable Josephson diode effect in a hybrid four-terminal Josephson junction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00584822" target="_blank" >RIV/68378271:_____/24:00584822 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0360844" target="_blank" >https://hdl.handle.net/11104/0360844</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.4c01642" target="_blank" >10.1021/acsnano.4c01642</a>
Alternative languages
Result language
angličtina
Original language name
Flux-tunable Josephson diode effect in a hybrid four-terminal Josephson junction
Original language description
We investigate the direction-dependent switching current in a flux-tunable four-terminal Josephson junction defined in an InAs/Al two-dimensional heterostructure. The device exhibits the Josephson diode effect with switching currents that depend on the sign of the bias current. The superconducting diode efficiency, reaching a maximum of |eta| approximate to 34%, is widely tunable & horbar,both in amplitude and sign & horbar,as a function of magnetic fluxes and gate voltages. Our observations are supported by a circuit model of three parallel Josephson junctions with nonsinusoidal current-phase relation. With respect to conventional Josephson interferometers, phase-tunable multiterminal Josephson junctions enable large diode efficiencies in structurally symmetric devices, where local magnetic fluxes generated on the chip break both time-reversal and spatial symmetries. Our work presents an approach for developing Josephson diodes with wide-range tunability that do not rely on exotic materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Nano
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
18
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
9221-9231
UT code for WoS article
001186318300001
EID of the result in the Scopus database
2-s2.0-85188178925