Published December 1, 1994
| Version v1
Journal article
Numerical study of a two-dimensional quantum antiferromagnet with random ferromagnetic bonds
Creators
- 1. Department of Physics, University of California, Santa Barbara, California 93106 (United States)
Description
A Monte Carlo method for finite-temperature studies of the two-dimensional quantum Heisenberg antiferromagnet with random ferromagnetic bonds is presented. The scheme is based on an approximation which allows for an analytic summation over the realizations of the randomness, thereby significantly alleviating the ''sign problem'' for this frustrated spin system. The approximation is shown to be very accurate for ferromagnetic bond concentrations of up to 10%. The effects of a low concentration of ferromagnetic bonds on the antiferromagnetism are discussed
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 50
- Journal Issue
- 21
- Journal Page Range
- p. 15803-15807.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26027016
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ANTIFERROMAGNETIC MATERIALS; BOND LENGTHS; COMPUTERIZED SIMULATION; HEISENBERG MODEL; HIGH-TC SUPERCONDUCTORS; MONTE CARLO METHOD; QUANTUM MECHANICS; RANDOMNESS; TWO-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- CALCULATION METHODS; CRYSTAL MODELS; MAGNETIC MATERIALS; MATERIALS; MATHEMATICAL MODELS; MECHANICS; SIMULATION; SUPERCONDUCTORS