Magnetic Field Dependence of the Ultrasonic Attenuation by Neutral Donors in Germanium
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概要
- 論文の詳細を見る
Magnetic field dependence has been calculated in detail for the attenuation of microwave phonons by neutral donors in Ge. Magnetic fields give rise to a considerable change in the attenuation. The aspect of the change depends on whether the product of the phonon angular frequency (ω_<qt>) and the relaxation time (τ) is larger or smaller than 1: roughly speaking, the attenuation increases with magnetic fields when ω_<qt>τ≫1, while it decreases when ω_<qt>τ≲1. The magnitude of the change depends on the strength and the direction of magnetic fields and also on the level width of triplet states when ω_<qt>τ≲1. Besides the ultrasonic spin resonance, a resonant absorption of phonons in the triplet states can occur when the energy splitting of triplet states becomes equal to the phonon energy and the splitting becomes larger than the level width of triplet states.
- 社団法人日本物理学会の論文
- 1970-05-05
著者
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MIKOSHIBA Nobuo
Electrotechnical Laboratory
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Suzuki Katsuo
Electrotechnical Laboratry:department Of Electrical Engineering Waseda University
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Suzuki Katsuo
Electrotechnical Laboratory
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Mikoshiba Nobuo
Electrotechnica Laboratory
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