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Helicon dispersion and damping in aluminium
Author(s) -
Larsen P. K.,
Greisen F. C.
Publication year - 1971
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.2220450141
Subject(s) - helicon , dispersion relation , physics , tensor (intrinsic definition) , aluminium , dispersion (optics) , interpretation (philosophy) , condensed matter physics , field (mathematics) , landau damping , fermi gamma ray space telescope , quantum electrodynamics , optics , quantum mechanics , magnetic field , materials science , mathematics , plasma , geometry , computer science , pure mathematics , metallurgy , programming language
The transmission of helicons through Al slabs has been investigated experimentally and numerically for q ∥ B ∥ [100] and [110]. In the former case oscillations are observed, for B smaller than the cut‐off field for helicons which might be of the Gantmakher‐Kaner type. Finally, the Landau damping for B not parallel to q is investigated. For comparison with the theory the non‐local magnetoconductivity tensor is calculated from Ashcroft's Fermi surface model and the helicon dispersion relation is solved numerically. This leads to a good overall interpretation of the experiments.