CYCLOTRON-RESONANCE OF BOTH MAGNETOPOLARON BRANCHES FOR POLAR AND NEUTRAL OPTIC-PHONON COUPLING IN THE LAYER COMPOUND INSE

Resonant polaron coupling has been observed by cyclotron resonance of two-dimensional electrons in the polar semiconductor InSe. Both upper and lower branches of the magnetopolaron are seen over a wide range of field (B=18-34 T), allowing an accurate test of polaron theories. A homopolar phonon is a...

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Главные авторы: Nicholas, R, Watts, M, Howell, D, Peeters, F, Wu, X, Devreese, J, Vanbockstal, L, Herlach, F, Langerak, C, Singleton, J, Chevy, A
Формат: Journal article
Язык:English
Опубликовано: 1992
Описание
Итог:Resonant polaron coupling has been observed by cyclotron resonance of two-dimensional electrons in the polar semiconductor InSe. Both upper and lower branches of the magnetopolaron are seen over a wide range of field (B=18-34 T), allowing an accurate test of polaron theories. A homopolar phonon is also observed to give resonant coupling, via a deformation potential, and we present a theoretical treatment of this coupling mechanism. This gives an accurate value of g2=0.001 0.0005 for the coupling constant. © 1992 The American Physical Society.