Journal
PHYSICAL REVIEW LETTERS
Volume 115, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.267205
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Funding
- European Research Council under the European Unions Seventh Framework Programme (FP7) [247328]
- MINECO, Spain [FIS2012-35719-C02]
- CNRS-INdAM GREFI-MEFI [GDRE 224]
- FPU program (Ministerio de Educacion, Spain)
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In the three-dimensional Heisenberg spin glass in a random field, we study the properties of the inherent structures that are obtained by an instantaneous cooling from infinite temperature. For a not too large field the density of states g(omega) develops localized soft plastic modes and reaches zero as omega(4) (for large fields a gap appears). When we perturb the system adding a force along the softest mode, one reaches very similar minima of the energy, separated by small barriers, that appear to be good candidates for classical two-level systems.
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