Green's-Function Theory of a Disordered Heisenberg Ferromagnet
- 7 September 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 25 (10) , 669-672
- https://doi.org/10.1103/physrevlett.25.669
Abstract
Magnetic properties are calculated for a spin one-half Heisenberg ferromagnet in which the exchange interactions deviate randomly in strength from the mean interaction. Disorder produces a low-energy peak and a high-energy tail in the density of spin-wave states for a simple-cubic geometry. The ferromagnetic Curie temperature is shown to decrease linearly with disorder; the temperature-dependent magnetization is not otherwise markedly altered.Keywords
This publication has 12 references indexed in Scilit:
- Paramagnetic Curie Temperatures of Gd-Doped Europium ChalcogenidesPhysical Review B, 1969
- Ferromagnetic properties of amorphous nickelPhysics Letters A, 1969
- Magnetic Field Effects on the Specific Heat of Impure FerromagnetsJournal of Applied Physics, 1969
- Green function theory of a spin- Heisenberg ferromagnetPhysics Letters A, 1969
- A Simple Model for Amorphous and Liquid FerromagnetsPhysica Status Solidi (b), 1969
- Specific Heat of Impure Heisenberg FerromagnetsJournal of Applied Physics, 1968
- Amorphous Ferromagnetic Phase in Iron-Carbon-Phosphorus AlloysJournal of Applied Physics, 1967
- Methods in the Quantum Theory of MagnetismPublished by Springer Nature ,1967
- METASTABLE Co–Au ALLOYS: EXAMPLE OF AN AMORPHOUS FERROMAGNETApplied Physics Letters, 1965
- Green Function Theory of FerromagnetismPhysical Review B, 1963