Published December 1974 | Version v1
Journal article Metadata-only

Spin wave amplification in ferromagnetic semiconductors

Creators

  • 1. Pernambuco Univ., Recife (Brazil). Instituto de Fisica

Description

The damping coefficient of magnons interacting with drifting carriers in ferromagnetic semiconductors for both Kl>1 and Kl<1 regimes is evaluated. It is shown that for CdCr2Se4 the amplification factor can be of the order or greater than the losses of spin waves due to other effects. It is also discussed the influence of plasma effects on the spin wave amplification problem

Availability note (English)

Shortened version published in Physica Status Solidi B. (1973). v. 57(85).

Abstract (Portuguese)

Calcula-se o coeficiente de amortecimento de magnons interagindo com portadores em semicondutores ferromagneticos tanto para Kl>1 como para Kl<1. Mostra-se que, para o CdCr2Se4, o fator de amplificacao pode ser de mesma ordem ou maior que as perdas de ondas de spin devidas a outros efeitos. Discute-se tambem a influencia dos efeitos de plasma no problema da amplificacao das ondas de spin

Additional details

Additional titles

Subtitle (English)
Plasma effects

Identifiers

DOI
10.1002/pssb.2220570108;

Publishing Information

Journal Title
physica status solidi (b)
Journal Volume
57
Journal Issue
1
Series
Rev. Bras. Fis.
Journal Page Range
85-91
ISSN
0370-1972

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
9380675
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CADMIUM COMPOUNDS; CHROMIUM COMPOUNDS; DAMPING; ELECTRON DRIFT; FERROMAGNETIC MATERIALS; FREQUENCY RANGE; GAIN; PLASMA; SELENIUM COMPOUNDS; SEMICONDUCTOR MATERIALS; SPIN WAVES
Descriptors DEC
MAGNETIC MATERIALS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
Updated automatically by Metadata and Full-Text Enrichment Agent