Published March 1979
| Version v1
Journal article
Cluster-Bethe-Lattice study of a planar antiferromagnet: Rb2NiF4
Creators
- 1. Universidade Estadual de Campinas (Brazil). Inst. de Fisica
Description
A discussion of the Cluster-Bethe-Lattice method is presented for a planar antiferromagnet for which the hamiltonian parameters are known and the one-magnon density of states may be computed exactly. All the square clusters of 1 to 121 atoms are studied both connected to and isolated from the Bethe lattices. It is shown that, even for the largest cluster treated, the approximation is still far from the exact result. It is discussed the limitations of the method
Abstract (Portuguese)
Apresenta-se uma discussao do metodo 'Cluster-Bethe-Lattice' para um antiferromagneto planar, para o qual os parametros do hamiltoniano sao conhecidos e a densidade de estados de um-magnon pode ser calculada exatamente. Estudam-se todos os nucleos centrais quadrados contendo de 1 ate 121 atomos, tanto ligados quanto isolados das redes de Beth. Mostra-se que, mesmo para o nucleo central de 121 atomos, a aproximacao ainda se encontra longe do resultado exato. As limitacoes do metodo sao discutidasAdditional details
Publishing Information
- Journal Title
- Rev. Bras. Fis.
- Journal Volume
- 9
- Journal Issue
- 1
- Series
- Rev. Bras. Fis.
- Journal Page Range
- 193-203
- ISSN
- 0374-4922
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 10481085
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANTIFERROMAGNETIC MATERIALS; CLUSTER MODEL; CRYSTAL LATTICES; FLUORINE COMPOUNDS; GREEN FUNCTION; ISOLATED VALUES; LATTICE PARAMETERS; MAGNONS; NICKEL COMPOUNDS; RUBIDIUM COMPOUNDS; SINGULARITY; THEORETICAL DATA
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CRYSTAL STRUCTURE; DATA; DATA FORMS; FUNCTIONS; HALOGEN COMPOUNDS; INFORMATION; MAGNETIC MATERIALS; MATHEMATICAL MODELS; NUCLEAR MODELS; NUMERICAL DATA; QUASI PARTICLES; TRANSITION ELEMENT COMPOUNDS