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періодичних видань НАН України
періодичних видань НАН України
Persistent currents in ballistic normal-metal rings
Репозиторій DSpace/Manakin
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Persistent currents in ballistic normal-metal rings
Тема:
Quantum coherent effects in superconductors and normal metals
Інший ID:
PACS: 73.23.Ra, 73.23.–b, 73.50.Td
Посилання:
Persistent currents in ballistic normal-metal rings / M. Moskalets // Физика низких температур. — 2010. — Т. 36, № 10-11. — С. 1219–1227. — Бібліогр.: 41 назв. — англ.
Підтримка:
I am grateful to Markus Büttiker for encouraging me to write this paper, for numerous fruitful discussions, and for careful reading of a manuscript.
Дата:
2010
Переглядів:
789
Завантажень:
346
Анотація:
Recent experiments renewed interest in persistent currents in mesoscopic normal-metal rings. We show that in ballistic rings in high magnetic fields the Zeeman splitting leads to periodic current quenching with period much larger than the period of the persistent current. Simple arguments show that this effect might be relevant for diffusive rings as well. Another aim of this paper is to discuss fluctuations of the persistent current due to thermal excitation of high-energy levels. Being observed such fluctuations would witness a coherent state of an electron system at high temperatures when the persistent current is exponentially suppressed.
