Observation of a lattice instability at the field-induced phase transition of the spin-gapped compound Cu2(C5H12N 2)2Cl4

J. E. Lorenzo, K. Katsumata, Y. Narumi, S. Shimomura, Y. Tanaka, M. Hagiwara, H. Mayaffre, C. Berthier, O. Piovesana, T. Ishikawa, H. Kitamura

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Abstract

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.

Original languageEnglish
Article number220409
Pages (from-to)220409-1-220409-4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number22
DOIs
Publication statusPublished - 2004 Jun 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Lorenzo, J. E., Katsumata, K., Narumi, Y., Shimomura, S., Tanaka, Y., Hagiwara, M., Mayaffre, H., Berthier, C., Piovesana, O., Ishikawa, T., & Kitamura, H. (2004). Observation of a lattice instability at the field-induced phase transition of the spin-gapped compound Cu2(C5H12N 2)2Cl4. Physical Review B - Condensed Matter and Materials Physics, 69(22), 220409-1-220409-4. [220409]. https://doi.org/10.1103/PhysRevB.69.220409