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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Veröffentlicht in:	Physica status solidi. B. Basic research 1998-09, Vol.209 (1), p.11-15
Hauptverfasser:	Tugushi, A. I., Tkeshelashvili, L. O., Zakharov, L. Zh
Format:	Artikel
Sprache:	eng
Schlagworte:	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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Zusammenfassung:	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