Bose-glass phases in disordered quantum magnets

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-gl...

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Bibliographic Details
Published in:Physical review letters 2005-11, Vol.95 (22), p.227201.1-227201.4, Article 227201
Main Authors: NOHADANI, Omid, WESSEL, Stefan, HAAS, Stephan
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
General theory and models of magnetic ordering
Magnetic properties and materials
Physics
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.95.227201