Bose–Einstein condensation versus localization of bosonic quasiparticles in disordered weakly-coupled dimer antiferromagnets
Tommaso RoscildeDepartment of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484, USAStephan HaasDepartment of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484, USA
2006en
ABI
Abstract
We investigate the field-induced insulator-to-superfluid transition of bosonic quasiparticles in $S=1/2$ weakly-coupled dimer antiferromagnets. In presence of realistic disorder due to site dilution of the magnetic lattice, we show that the system displays an extended Bose-glass phase characterized by the localization of the hard-core quasiparticles.
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Cited by 20 references