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Field-concentration phase diagram of a quantum spin liquid with bond defects | | D. Hüvonen
; G. Ballon
; A. Zheludev
; | | Date: |
10 Jul 2013 | | Abstract: | The magnetic susceptibility of the gapped quantum spin liquid compound
(C$_4$H$_{12}$N$_2$)Cu$_2$Cl$_6$ and its chemically disordered derivatives
(C$_4$H$_{12}$N$_2$)Cu$_2$(Cl$_{1-x}$Br$_{x}$)$_6$ are systematically studied
in magnetic fields of up to 45 T, as a function of Br concentration. The
corresponding field-temperature and field-concentration phase diagrams are
determined. Measurements on the disorder-free parent compound are not fully
consistent with previously published results by other authors [PRL{f 96},
257203 (2006)]. The effect of Br/Cl substitution on the magnetic properties is
superficially similar to that of finite temperature. However, important
differences are identified and discussed with reference to the previously
studied magnetic excitation spectra. | | Source: | arXiv, 1307.2750 | | Services: | Forum | Review | PDF | Favorites | |
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