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dc.contributor.author Kadigrobov, A.M.
dc.contributor.author Shekhter, R.I.
dc.contributor.author Jonson, M.
dc.date.accessioned 2017-05-27T18:34:26Z
dc.date.available 2017-05-27T18:34:26Z
dc.date.issued 2012
dc.identifier.citation 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. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 73.40.–c
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/117976
dc.description.abstract 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)]. uk_UA
dc.description.sponsorship Financial support from the European Commission (FP7-ICT-FET-225955 STELE), the Swedish VR, and the Korean WCU program funded by MEST/NFR (R31-2008- 000-10057-0) is gratefully acknowledged. uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Наноструктуры при низких температурах uk_UA
dc.title Photon generation in ferromagnetic point contacts uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA

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