Journal article
Ground states versus low-temperature equilibria in random field Ising chains
The European Physical Journal B - Condensed Matter and Complex Systems, Vol.24(1), pp.101-105
2001
Abstract
Random walk arguments and exact numerical computations are used to study one-dimensional random field chains. The ground state structure is described with absorbing and non-absorbing random walk excursions. At low temperatures, the local magnetization follows the ground state except at regions where a local random field fluctuation makes thermal excitations easier. This is explained by the random walk picture, implying that the magnetization lengthscale is a product of the domain size and the thermal excitation scale.
PACS. 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion – 05.50.+q Lattice theory and statistics (Ising, Potts, etc.) – 75.50.Lk Spin glasses and other random magnets
Details
- Title
- Ground states versus low-temperature equilibria in random field Ising chains
- Authors/Creators
- G.E. Schröder-Turk (Author/Creator)T. Knetter (Author/Creator)M.J. Alava (Author/Creator)H. Rieger (Author/Creator)
- Publication Details
- The European Physical Journal B - Condensed Matter and Complex Systems, Vol.24(1), pp.101-105
- Publisher
- Springer-Verlag
- Identifiers
- 991005545285707891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 5 Physics
- 5.214 Statistical Mechanics
- 5.214.210 Spin Models
- Web Of Science research areas
- Physics, Condensed Matter
- ESI research areas
- Physics