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Two-dimensional randomly-frustrated spin 1/2 Heisenberg model
- Publication Year :
- 2001
- Publisher :
- arXiv, 2001.
-
Abstract
- We investigate the properties of S=1/2 Heisenberg clusters with random frustration using exact diagonalizations. This is a model for a quantum spin glass. We show that the average ground state spin is $S \propto \sqrt{N}$, where N is the number of sites. We also calculate the magnetic susceptibility and the spin stiffness and low-energy excitations, and discuss these in terms of a semiclassical picture.<br />Comment: 4 pages, 3 figures, 2 tables
- Subjects :
- Physics
Strongly Correlated Electrons (cond-mat.str-el)
Heisenberg model
media_common.quotation_subject
General Physics and Astronomy
Frustration
Semiclassical physics
FOS: Physical sciences
Disordered Systems and Neural Networks (cond-mat.dis-nn)
Condensed Matter - Disordered Systems and Neural Networks
Magnetic susceptibility
Condensed Matter - Strongly Correlated Electrons
Quantum mechanics
Condensed Matter::Strongly Correlated Electrons
Spin (physics)
Ground state
media_common
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d75886fb4d1071e76c59d42513b04ec5
- Full Text :
- https://doi.org/10.48550/arxiv.cond-mat/0105337