Photon generation in ferromagnetic point contacts
We show theoretically that a significant spin accumulation can occur in electric point contacts between two ferromagnetic electrodes with different magnetizations. Under appropriate conditions an inverse population of spin-split electronic levels results in stimulated emission of photons in the pr...
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| Дата: | 2012 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2012
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| Назва видання: | Физика низких температур |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117976 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Photon generation in ferromagnetic point contacts / A.M. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2012. — Т. 38, № 12. — С. 1439–1445. — Бібліогр.: 25 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-117976 |
|---|---|
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| spelling |
irk-123456789-1179762017-05-28T03:04:37Z Photon generation in ferromagnetic point contacts Kadigrobov, A.M. Shekhter, R.I. Jonson, M. Наноструктуры при низких температурах We show theoretically that a significant spin accumulation can occur in electric point contacts between two ferromagnetic electrodes with different magnetizations. Under appropriate conditions an inverse population of spin-split electronic levels results in stimulated emission of photons in the presence of a resonant electromagnetic field. The intensity of the emitted radiation can be several orders of magnitude higher than in typical semiconductor laser materials for two reasons. (1) The density of conduction electrons in a metal point conduct is much larger than in semiconductors. (2) The strength of the coupling between the electron spins and the electromagnetic field that is responsible for the radiative spin-flip transitions is set by the magnetic exchange energy and can therefore be very large as suggested by Kadigrobov et al. [Europhys. Lett. 67, 948 (2004)]. 2012 Article Photon generation in ferromagnetic point contacts / A.M. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2012. — Т. 38, № 12. — С. 1439–1445. — Бібліогр.: 25 назв. — англ. 0132-6414 PACS: 73.40.–c http://dspace.nbuv.gov.ua/handle/123456789/117976 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Наноструктуры при низких температурах Наноструктуры при низких температурах |
| spellingShingle |
Наноструктуры при низких температурах Наноструктуры при низких температурах Kadigrobov, A.M. Shekhter, R.I. Jonson, M. Photon generation in ferromagnetic point contacts Физика низких температур |
| description |
We show theoretically that a significant spin accumulation can occur in electric point contacts between two
ferromagnetic electrodes with different magnetizations. Under appropriate conditions an inverse population of
spin-split electronic levels results in stimulated emission of photons in the presence of a resonant electromagnetic
field. The intensity of the emitted radiation can be several orders of magnitude higher than in typical semiconductor
laser materials for two reasons. (1) The density of conduction electrons in a metal point conduct is much
larger than in semiconductors. (2) The strength of the coupling between the electron spins and the electromagnetic
field that is responsible for the radiative spin-flip transitions is set by the magnetic exchange energy and can
therefore be very large as suggested by Kadigrobov et al. [Europhys. Lett. 67, 948 (2004)]. |
| format |
Article |
| author |
Kadigrobov, A.M. Shekhter, R.I. Jonson, M. |
| author_facet |
Kadigrobov, A.M. Shekhter, R.I. Jonson, M. |
| author_sort |
Kadigrobov, A.M. |
| title |
Photon generation in ferromagnetic point contacts |
| title_short |
Photon generation in ferromagnetic point contacts |
| title_full |
Photon generation in ferromagnetic point contacts |
| title_fullStr |
Photon generation in ferromagnetic point contacts |
| title_full_unstemmed |
Photon generation in ferromagnetic point contacts |
| title_sort |
photon generation in ferromagnetic point contacts |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2012 |
| topic_facet |
Наноструктуры при низких температурах |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117976 |
| citation_txt |
Photon generation in ferromagnetic point contacts / A.M. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2012. — Т. 38, № 12. — С. 1439–1445. — Бібліогр.: 25 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT kadigrobovam photongenerationinferromagneticpointcontacts AT shekhterri photongenerationinferromagneticpointcontacts AT jonsonm photongenerationinferromagneticpointcontacts |
| first_indexed |
2023-10-18T20:31:02Z |
| last_indexed |
2023-10-18T20:31:02Z |
| _version_ |
1796150406815940608 |