Bose-Glass Phases in Disordered Quantum Magnets
arXiv:cond-mat/0505603 · doi:10.1103/PhysRevLett.95.227201
Abstract
In disordered spin systems with antiferromagnetic Heisenberg exchange, transitions into and out of a magnetic-field-induced ordered phase pass through a unique regime. Using quantum Monte Carlo simulations to study the zero-temperature behavior, these intermediate regions are determined to be a Bose-Glass phase. The localization of field-induced triplons causes a finite compressibility and hence glassiness in the disordered phase.
4 pages, 4 figures