Evidence of a magnetic Bose glass in (CH3) 2 CHNH3 Cu (Cl {0.95} Br {0.05}) 3 from neutron diffraction

Abstract

We report the single-crystal study of the bulk magnetization and neutron-scattering measurements on a quantum S=1/2 spin ladders system IPA-Cu (Cl0.95 Br0.05) 3 with quenched disorder. In zero field, the disordered spin liquid phase is preserved as in pure IPA-CuCl3. Due to the bond randomness, a different Bose glass phase was directly observed in Hc