Transverse Ultrasonic Attenuation in Magnetic Metals
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概要
- 論文の詳細を見る
The transverse ultrasonic attenuation due to spin fluctuations in magnetic metals is theoretically studied. Spin fluctuations with finite wave numbers cause the critical attenuation at the Neel temperatures, but the ferromagnetic spin fluctuation does not. The ration of the attenuation coefficient for transverse sound to that for longitudinal sound near the Neel temperature is given as a function of (i) the directions of sound propagation and polarization relative to the Q vector and (ii) Q/2p_f, where Q is the wave number at which the spin ordering occurs below the Neel temperature and p_f is the Fermi wave number of electron. The critical attenuation in MnSi observed by Komatsubara et al. is discussed in the light of the present theory.
- 理論物理学刊行会の論文
- 1978-01-25
著者
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Tachiki Masashi
The Research Institute For Iron Steel And Other Metals
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Tachiki Masashi
The Research Institute For Iron Steel And Other Metals Tohoku University
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Takahashi Saburo
The Research Institute For Iron Steel And Other Metals Tohoku University
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Maekawa Sadamichi
The Research Institute For Iron Steel And Other Metals
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Maekawa Sadamichi
The Recearch Institute For Iron Steel And Other Metals Tohoku University
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Tachiki Masashi
Institute for Materials Research, Tohoku University
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