Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10127480" target="_blank" >RIV/00216208:11320/12:10127480 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0031-8949/2012/T151/014023" target="_blank" >http://dx.doi.org/10.1088/0031-8949/2012/T151/014023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0031-8949/2012/T151/014023" target="_blank" >10.1088/0031-8949/2012/T151/014023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment

Popis výsledku v původním jazyce

We investigate theoretically the V-I characteristics and voltage noise of superconducting tunnel junctions with a small critical current via the matrix-continued-fraction method. Special attention is paid to the large hysteresis in the V-I characteristics and to the voltage-noise anomaly observed in preliminary experiments. The current dependence of the voltage noise shows a strong asymmetry between the forward and the backward current ramping and a discontinuous change in the noise close to its measured maximum occurring at the switching current. We show that both the large hysteresis and the voltage noise anomaly in this current-biased setup are a consequence of the influence of the junction's electromagnetic environment. Typically, the voltage-noisedependence on the junction current parametrized by the external drive contains a loop that is, however, not observed experimentally because of the implementation of the junction-current ramp. Skipping a part of the loop is responsible fo

Název v anglickém jazyce

Asymmetric voltage noise in superconducting tunnel junctions with the electromagnetic environment

Popis výsledku anglicky

We investigate theoretically the V-I characteristics and voltage noise of superconducting tunnel junctions with a small critical current via the matrix-continued-fraction method. Special attention is paid to the large hysteresis in the V-I characteristics and to the voltage-noise anomaly observed in preliminary experiments. The current dependence of the voltage noise shows a strong asymmetry between the forward and the backward current ramping and a discontinuous change in the noise close to its measured maximum occurring at the switching current. We show that both the large hysteresis and the voltage noise anomaly in this current-biased setup are a consequence of the influence of the junction's electromagnetic environment. Typically, the voltage-noisedependence on the junction current parametrized by the external drive contains a loop that is, however, not observed experimentally because of the implementation of the junction-current ramp. Skipping a part of the loop is responsible fo

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GCP204%2F11%2FJ042" target="_blank" >GCP204/11/J042: Supraproud a střídavý Josephsonův jev v nekonvenčních nanoskopických spojích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica Scripta

ISSN

0031-8949

e-ISSN

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Svazek periodika

T151

Číslo periodika v rámci svazku

listopad

Stát vydavatele periodika

SE - Švédské království

Počet stran výsledku

5

Strana od-do

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Kód UT WoS článku

000311961700024

EID výsledku v databázi Scopus

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