Work

Mean Field Theory of a Quantum Heisenberg Spin Glass

Year: 2000

Type: article

Abstract: A full mean-field solution of a quantum Heisenberg spin-glass model is presented in a large- N limit. A spin-glass transition is found for all values of the spin S. The quantum critical regime associated with the quantum transition at S = 0 and the various regimes in the spin-glass phase at high spin are analyzed. The specific heat is shown to vanish linearly with temperature. In the spin-glass phase, intriguing connections between the equilibrium properties of the quantum problem and the out-of-equilibrium dynamics of classical models are pointed out.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.85.840

Authors: Antoine Georges, Olivier Parcollet, Subir Sachdev

Institutions: Centre National de la Recherche Scientifique, École Normale Supérieure - PSL, Rutgers, The State University of New Jersey, Yale University

Language: English

Topic: Theoretical and Computational Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, Centre National de la Recherche Scientifique, Division of Materials Research

Award: G1653696234