Longitudinal spin relaxation in the random-two-frequency model

verfasst von

P. Borgs, K. W. Kehr, P. Heitjans

Abstract

The spin depolarization is investigated by random transition processes between two rotation frequencies ω₁ and ω₂, where the spin and the two rotation frequencies may have arbitrary orientations in three-dimensional space. A general expression for the dynamics of the spin polarization is derived in the Laplace domain. For rapid transitions between both frequencies a spin precession with the average frequency 1 2(ω₁+ω₂) is found, which is damped in accordance with motional narrowing. An average of the results over Gaussian distributions of the rotation frequencies ω₁ and ω₂ is also performed. For large transition rates the result of the static Kubo-Toyabe theory is recovered.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie

Externe Organisation(en)

Forschungszentrum Jülich

Typ

Artikel

Journal

Physics Letters A

Band

155

Seiten

429-434

Anzahl der Seiten

6

ISSN

0375-9601

Publikationsdatum

20.05.1991

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Elektronische Version(en)

https://doi.org/10.1016/0375-9601(91)91052-F (Zugang: Unbekannt)