The Second-Order Doppler Displacement of the Mössbauer γ-Radiation in Amorphous Solid States

The influence of two‐level tunnelling systems and “bosonic peak” on the second‐order Doppler displacement of Mössbauer γ‐radiation in disordered materials is investigated. It is shown, that the Mγssbauer frequency temperature displacement at temperatures 10—4K < T < ωmℏ/kBis determined by “bos...

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Bibliographic Details
Published in:Physica status solidi. B. Basic research 1998-09, Vol.209 (1), p.11-15
Main Authors: Tugushi, A. I., Tkeshelashvili, L. O., Zakharov, L. Zh
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Mossbauer effect
other γ-ray spectroscopy
Mössbauer effect
other γ-ray spectroscopy
Physics
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Summary:The influence of two‐level tunnelling systems and “bosonic peak” on the second‐order Doppler displacement of Mössbauer γ‐radiation in disordered materials is investigated. It is shown, that the Mγssbauer frequency temperature displacement at temperatures 10—4K < T < ωmℏ/kBis determined by “bosonic peak” and at T < 10—4K by two‐level tunnelling systems.
ISSN:0370-1972
1521-3951
DOI:10.1002/(SICI)1521-3951(199809)209:1<11::AID-PSSB11>3.0.CO;2-Q