Bose-Einstein condensation vs. localization of bosonic quasiparticles in disordered weakly-coupled dimer antiferromagnets
arXiv:cond-mat/0512023 · doi:10.1088/0953-4075/39/10/S15
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.
12 pages, 4 figures. Contribution to the BEC Cortona Workshop 2005