Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.047203
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Funding
- NSF [DMR-1006731, DMR-0819860, PHY-0600953]
- Brutus cluster of ETH Zurich
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Scaling arguments and precise simulations are used to study the square lattice +/- J Ising spin glass, a prototypical model for glassy systems. Droplet theory explains, and our numerical results show, entropically stabilized long-range spin-glass order at zero temperature, which resembles the energetic stabilization of long-range order in higher-dimensional models at finite temperature. At low temperature, a temperature-dependent crossover length scale is used to predict the power-law dependence on temperature of the heat capacity and clarify the importance of disorder distributions.
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