We report the observation of a jump in the a- and c-lattice constants at the critical field Hc1 and at temperatures of the order 40 mK in the S=1/2 spin-gapped compound Cu2(C5H12N 2)2Cl4 by means of synchrotron x-ray diffraction, This anomaly, characteristic of a first-order phase transition, results from the development and further stabilization of a symmetry breaking magnetic long-range order.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2004 Jun 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics