Theory of Ultrasonic Attenuation by Hopping Pairs in n-Ge

  • Zbigniew W. Gortel


It is known that the attenuation of ultrasound in n-Ge at microwave frequencies of the order of few GHz and in the temperature range from about 7 to 40 K is mainly due to the interaction of acoustic phonons with electrons localized on neutral donors [1,2]. Due to this mechanism the attenuation coefficient is strongly anisotropic and vanishes fof longitudinal ultrasonic wave propagating along [100] and for transverse one with \(\vec q\)ll [110] and polarisation along [110].


Microwave Anisotropy Attenuation 


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  1. [1]
    P.C. Kwok, Phys. Rev. 149 666 (1966).ADSCrossRefGoogle Scholar
  2. [2]
    M. Pomerantz, Phys. Rev. B1 4029 (1970).ADSGoogle Scholar
  3. [3].
    A. Miller and E. Abrahams, Phys. Rev. 120 745 (1960).ADSMATHCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • Zbigniew W. Gortel
    • 1
  1. 1.Institute of Theoretical PhysicsWarsaw UniversityWarsawPoland

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