Soft Modes, Localization, and Two-Level Systems in Spin Glasses
Financiación FP7 / Fp7 Funds
Resumen: 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(¿) develops localized soft plastic modes and reaches zero as ¿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.
Idioma: Inglés
DOI: 10.1103/PhysRevLett.115.267205
Año: 2015
Publicado en: Physical Review Letters 115, 26 (2015), 267205 [6 pp]
ISSN: 0031-9007

Factor impacto JCR: 7.645 (2015)
Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 79 = 0.076 (2015) - Q1 - T1
Factor impacto SCIMAGO:

Financiación: info:eu-repo/grantAgreement/EC/FP7/247328/EU/Critical Phenomena in Random Systems/CRIPHERASY
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-35719-C02
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Teórica (Dpto. Física Teórica)

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