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Hyperfine-interaction-driven Aharonov-Bohm effect in mesoscopic rings
It is shown qualitatively that lifting of the electron spin degeneracy by a hyperfine field, which is generated by a nonequilibrium nuclear spin distribution, and breaking of the left-right symmetry by the spin-orbit interaction in a closed ring produces under certain conditions a persistent curre...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Series: | Физика низких температур |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/176351 |
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| Summary: | It is shown qualitatively that lifting of the electron spin degeneracy by a hyperfine field, which is
generated by a nonequilibrium nuclear spin distribution, and breaking of the left-right symmetry by the
spin-orbit interaction in a closed ring produces under certain conditions a persistent current, which
demonstrates the Aharonov-Bohm-like oscillations with time in GaAs / AlGaAs-based mesoscopic rings
even m the absence of an external magnetic field. The typical time interval of these (mesonucleospinic)
oscillations is of the order of several seconds, which is typical of the nuclear spin relaxation times in
heterojunctions. |
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