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Ex situ elaborated proximity mesoscopic structures for ultrahigh vacuum scanning tunneling spectroscopyстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 21 июля 2014 г.
- Авторы: Stolyarov V.S., Cren T., Debontridder F., Brun C., Veshchunov I.S., Skryabina O.V., Rusanov A.Yu, Roditchev D.
- Журнал: Applied Physics Letters
- Том: 104
- Год издания: 2014
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 172604
- DOI: 10.1063/1.4874647
- Аннотация: We apply ultrahigh vacuum Scanning Tunneling Spectroscopy (STS) at ultra-low temperature to tudy proximity phenomena in metallic Cu in contact with superconducting Nb. In order to solv the problem of Cu-surface contamination, Cu(50 nm)/Nb(100 nm) structures are grown by respecting the inverted order of layers on SiO2/Si substrate. Once transferred into vacuum, the samples are cleaved at the structure-substrate interface. As a result, a contamination-free Cu-surface is exposed in vacuum. It enables high-resolution STS of superconducting correlations induced by proximity from the underlying superconducting Nb layer. By applying magnetic field, we generate unusual proximity-induced superconducting vortices and map them with a high spatial and energy resolution. The suggested method opens a way to access local electronic properties of complex electronic mesoscopic devices by performing ex situ STS under ultrahigh vacuum.
- Добавил в систему: Столяров Василий Сергеевич