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Theory of Ultrasonic Attenuation by Magnetic Surface States in Metals
Author(s) -
Fischbeck H. J.,
Mertsching J.
Publication year - 1969
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19690310112
Subject(s) - attenuation , microwave , ultrasonic sensor , realization (probability) , ultrasonic attenuation , point (geometry) , absorption (acoustics) , surface (topology) , physics , matrix (chemical analysis) , acoustics , computational physics , optics , condensed matter physics , materials science , quantum mechanics , mathematics , geometry , statistics , composite material
A theoretical expression for the resonant absorption of longitudinal ultrasound by magnetic surface states is given, and the basic physical ideas are explained. The interaction matrix element showing quasi‐geometric oscillations is calculated and discussed, and the order of magnitude of the absorption is estimated. The experimental realization of the effect appears to be very difficult. From the theoretical point of view it is pointed out that on favourable conditions such ultrasonic investigations should be more convenient for determining the relevant physical parameters than microwave experiments.