Bose-Glass Phases in Disordered Quantum Magnets
Omid NohadaniDepartment of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484, USAStefan WeßelInstitut für Theoretische Physik III, Universität Stuttgart, 70550 Stuttgart, GermanyStephan HaasDepartment of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484, USA
2005en
ABI
Abstract
In disordered spin systems with antiferromagnetic Heisenberg exchange, transitions into and out of a magnetic-field-induced ordered phase pass through unique regimes. Using quantum Monte Carlo simulations to study the zero-temperature behavior, these intermediate regions are determined to be Bose-glass phases. The localization of field-induced triplons causes a finite compressibility and, hence, glassiness in the disordered phase.
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