Spin dephasing in pseudomagnetic fields: susceptibility and geometry
We present a theory of spin dynamics caused by spin-orbit coupling for two-dimensional gases of cold atoms and other quasiparticles with pseudospin 1/2 moving in orbital gauge fields. Our approach is based on the gauge transformation in the form of a SU(2) rotation gauging out the spin-orbit couplin...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2016 |
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| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2016
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/129111 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Spin dephasing in pseudomagnetic fields: susceptibility and geometry / I.V. Tokatly E.Ya. Sherman // Физика низких температур. — 2016. — Т. 42, № 5. — С. 506-512. — Бібліогр.: 30 назв. — англ. |
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Tokatly, E.Ya. Sherman, I.V. 2018-01-16T13:44:37Z 2018-01-16T13:44:37Z 2016 Spin dephasing in pseudomagnetic fields: susceptibility and geometry / I.V. Tokatly E.Ya. Sherman // Физика низких температур. — 2016. — Т. 42, № 5. — С. 506-512. — Бібліогр.: 30 назв. — англ. 0132-6414 PACS: 03.75.Ss, 05.30.Fk, 67.85.–d https://nasplib.isofts.kiev.ua/handle/123456789/129111 We present a theory of spin dynamics caused by spin-orbit coupling for two-dimensional gases of cold atoms and other quasiparticles with pseudospin 1/2 moving in orbital gauge fields. Our approach is based on the gauge transformation in the form of a SU(2) rotation gauging out the spin-orbit coupling. As a result, the analysis of the spin dynamics is reduced to calculation of the density-related susceptibility of the system without spin-orbit coupling at the wavevector determined by the spin-rotation length. This approach allows one to treat the spin dynamics in terms of the linear response theory for bosonic and fermionic ensembles. We study different regimes of irreversible spin relaxation and coherent spin dynamics in these systems. For bosonic gases the effects of low temperature are crucial due to accumulation of particles in the small-momentum subspace even if the Bose–Einstein condensation does not occur due to the system low dimensionality. We acknowledges funding by the Spanish MEC (FIS2010–21282-C02–01 and FIS2012–36673-C03–01) and “Grupos Consolidados UPV/EHU del Gobierno Vasco” (IT-319–07 and IT-472–10). The contribution of EYS was, in addition, supported by the University of Basque Country UPV/EHU under program UFI 11/55. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 100-летию со дня рождения К.Б. Толпыго Spin dephasing in pseudomagnetic fields: susceptibility and geometry Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| spellingShingle |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry Tokatly, E.Ya. Sherman, I.V. К 100-летию со дня рождения К.Б. Толпыго |
| title_short |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| title_full |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| title_fullStr |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| title_full_unstemmed |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| title_sort |
spin dephasing in pseudomagnetic fields: susceptibility and geometry |
| author |
Tokatly, E.Ya. Sherman, I.V. |
| author_facet |
Tokatly, E.Ya. Sherman, I.V. |
| topic |
К 100-летию со дня рождения К.Б. Толпыго |
| topic_facet |
К 100-летию со дня рождения К.Б. Толпыго |
| publishDate |
2016 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
We present a theory of spin dynamics caused by spin-orbit coupling for two-dimensional gases of cold atoms and other quasiparticles with pseudospin 1/2 moving in orbital gauge fields. Our approach is based on the gauge transformation in the form of a SU(2) rotation gauging out the spin-orbit coupling. As a result, the analysis of the spin dynamics is reduced to calculation of the density-related susceptibility of the system without spin-orbit coupling at the wavevector determined by the spin-rotation length. This approach allows one to treat the spin dynamics in terms of the linear response theory for bosonic and fermionic ensembles. We study different regimes of irreversible spin relaxation and coherent spin dynamics in these systems. For bosonic gases the effects of low temperature are crucial due to accumulation of particles in the small-momentum subspace even if the Bose–Einstein condensation does not occur due to the system low dimensionality.
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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/129111 |
| citation_txt |
Spin dephasing in pseudomagnetic fields: susceptibility and geometry / I.V. Tokatly E.Ya. Sherman // Физика низких температур. — 2016. — Т. 42, № 5. — С. 506-512. — Бібліогр.: 30 назв. — англ. |
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AT tokatlyeya spindephasinginpseudomagneticfieldssusceptibilityandgeometry AT shermaniv spindephasinginpseudomagneticfieldssusceptibilityandgeometry |
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2025-12-07T19:19:57Z |
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2025-12-07T19:19:57Z |
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1850878404344152064 |