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On the concept of cyclotron resonance in metals
Author(s) -
Saermark K.,
Lebech J.,
Johansen H.
Publication year - 1977
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.2220830121
Subject(s) - cyclotron resonance , dispersion relation , cyclotron , attenuation , physics , dispersion (optics) , resonance (particle physics) , magnetic field , ion cyclotron resonance , computational physics , atomic physics , condensed matter physics , optics , quantum mechanics
Experimental evidence is presented, indicating that an impinging, high frequency electromagnetic wave penetrates to a considerable depth beneath the surface of a monocrystalline, metallic sample. It is shown, on the basis of a rigorous dispersion equation for cyclotron waves, that the attenuation length for these waves is γ i = v g τ where v g is the group velocity and τ the relaxation time. The attenuation length varies in a characteristic way with the magnetic field and may become as large as the mean free path of the charge carriers. A possible relation to Azbel‐Kaner cyclotron resonance is pointed out.