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Microwave-induced spin-flip scattering of electrons in point contacts
Репозиторій DSpace/Manakin
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Microwave-induced spin-flip scattering of electrons in point contacts
Тема:
Современные проблемы низкотемпературной физики конденсированного состояния
Інший ID:
PACS: 72.25.–b, 73.40.Jn, 75.76.+j, 85.75.–d
Посилання:
Microwave-induced spin-flip scattering of electrons in point contacts / A.M. Kadigrobov, R.I. Shekhter, I. Aronov, S.I. Kulinich, A. Pulkin, M. Jonson // Физика низких температур. — 2011. — Т. 37, № 11. — С. 1163–1172. — Бібліогр.: 19 назв. — англ.
Підтримка:
Financial support from the Swedish VR, the European Commission (FP7-ICT-2007-C; project No. 225955 STELE) and the Korean WCU program funded by MEST/NFR (R31-2008-000-10057-0) is gratefully acknowledged. SIK acknowledges the hospitality of the Department of Physics at the University of Gothenburg.
Дата:
2011
Переглядів:
775
Завантажень:
461
Анотація:
We investigate resonant interaction of conduction electrons with an electromagnetic field that irradiates a point contact between a ferromagnetic and a normal metal in the presence of a strong magnetic field of order 1 T. We show that electron spin-flips caused by resonant absorption and stimulated emission of photons result in a sharp peak in the magnetic-field dependence of the point-contact resistance. The height of the peak is shown to be directly proportional to the net rate of energy transfer to the electromagnetic field in the point contact due to absorption and stimulated emission of photons. Estimations indicate that our theory can serve as a basis for the explanation of recent experiments [A.M. Kadigrobov et al., New J. Phys. 13, 023007 (2011)].
