Published June 2012 | Version v1
Journal article Metadata-only

Curie temperature of diluted magnetic semiconductors: The influence of the antiferromagnetic exchange interaction

Creators

  • 1. Institute of Physics, VAST, Hanoi (Viet Nam)
  • 2. Hanoi National University of Education, Hanoi (Viet Nam)

Description

The coherent potential approximation and mean field approximation are used to calculate the free energy of the coupled carrier - localized spin system in III-V diluted magnetic semiconductors. Thus the magnetic transition temperature Tc can be determined and its dependence on important model parameters. We show that the strong antiferromagnetic superexchange interaction between nearest neighbour sites considerably reduces the Curie temperature. (author)

Additional details

Publishing Information

Journal Title
Communications in Physics
Journal Volume
22
Journal Issue
2
Series
Published by Vietnam Academy of Science and Technology
Journal Page Range
p. 141-146
ISSN
0868-3166

INIS

Country of Publication
Viet Nam
Country of Input or Organization
Viet Nam
INIS RN
44060192
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANTIFERROMAGNETISM; APPROXIMATIONS; CARRIERS; CURIE POINT; EXCHANGE INTERACTIONS; FREE ENERGY; MAGNETIC SEMICONDUCTORS; MEAN-FIELD THEORY; POTENTIALS; SPIN
Descriptors DEC
ANGULAR MOMENTUM; CALCULATION METHODS; ENERGY; INTERACTIONS; MAGNETISM; MATERIALS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; SEMICONDUCTOR MATERIALS; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Notes
4 figs., 13 refs.