Published November 1978 | Version v1
Report Open

Spin polarization of a magnetic electron gas induced by a van Vleck ion

Creators

  • 1. Universidade Federal Fluminense, Niteroi (Brazil)
  • 2. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro

Description

The mutual polarization of a magnetic electron gas and a van Vleck ion, interacting via exchange, are theoretically investigated using the double-time Green function method. A pair of equations describing the dynamics of the electron gas and the ion are conveniently decoupled and an analytic expression for the electron gas polarization, which depends on the square of the exchange parameter, is obtained. Besides a RKKY-like term, a new term associated to the process of formation of the magnetic moment of the ion appears

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Investiga-se teoricamente, usando o metodo de funcao de Green do duplo tempo, a polarizacao mutua de um gas de eletron magnetico e um ion de van Vleck, interagindo via troca. Um par de equacoes descrevendo a dinamica do gas de eletrons e do ion e convenientemente desacoplado e obtem-se uma expressao analitica para a polarizacao do gas de eletrons, que depende do quadrado do parametro de troca. Alem de um termo tipo RKKY, aparece um novo termo associado ao processo de formacao do momento magnetico do ion

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Additional details

Publishing Information

Imprint Pagination
15 p.
Report number
CBPF--A0030/78

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
10442778
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
BAND THEORY; CRYSTAL FIELD; ELECTRON GAS; EXCHANGE INTERACTIONS; GREEN FUNCTION; MAGNETIZATION; MOLECULAR IONS; RUDERMAN-KITTEL COUPLING; SPIN ORIENTATION; TIME DEPENDENCE; VAN VLECK THEORY
Descriptors DEC
CHARGED PARTICLES; COUPLING; FUNCTIONS; INTERACTIONS; IONS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; ORIENTATION; PHYSICAL PROPERTIES