|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
Proximity-effect engineering in aluminum-based planar Josephson junctions with intrinsic superconductivityстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 марта 2026 г.
- Авторы: Polevoy K.B., Bakurskiy S.V., Ruzhickiy V.I., Egorov S.V., Shishkin A.G., Frolov A.S., Kirsanova M.A., Krupatin I.N., Yanilkin A.V., Klenov N.V., Soloviev I.I., Golubov A.A., Kupriyanov M.Yu, Stolyarov V.S.
- Журнал: Physical Review Applied
- Том: 25
- Номер: 2
- Год издания: 2026
- Первая страница: 024030
- Номер статьи: 024030
- DOI: 10.1103/s1k7-wvw2
- Аннотация: We present a comprehensive study of planar Nb-Al-Nb Josephson junctions with submicron dimensions (L ≈ 100 nm, active area ≈ 5*10^4 nm^2), where the intrinsic superconductivity of the aluminum weak link plays a crucial role in enhancing device performance. Through a combination of theoretical modeling and experimental characterization, we demonstrate that the aluminum interlayer significantly boosts the critical current Ic≈50 mkA and the characteristic voltage Vc ≈ 1mV at T=4K, while maintaining non-hysteretic current-voltage characteristics essential for digital applications. Our microscopic model, based on self-consistent solutions of the Usadel equations, reveals that this enhancement originates from the coexistence of proximity-induced superconductivity and intrinsic pairing in aluminum, which is particularly pronounced at an optimal boundary resistance. Structural analysis confirms epitaxial Nb/Al interfaces with minimal interdiffusion, enabling reproducible fabrication of these compact junctions. These results establish Nb-Al-Nb bridges as promising building blocks for high-density superconducting electronics operating at helium temperatures.
- Добавил в систему: Бакурский Сергей Викторович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|