Soundwave Anomalies in SrCu_{2}(BO_{3})_{2}

S. Zherlitsyn; S. Schmidt; B. Wolf; H. Schwenk; B. Lüthi; H. Kageyama; K. Onizuka; Y. Ueda; K. Ueda

doi:10.1103/PhysRevB.62.R6097

Soundwave Anomalies in SrCu_{2}(BO_{3})_{2}

Strongly Correlated Electrons 2019-08-17 v1

Authors: S. Zherlitsyn , S. Schmidt , B. Wolf , H. Schwenk , B. Lüthi , H. Kageyama , K. Onizuka , Y. Ueda , K. Ueda

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Abstract

The temperature and high magnetic field dependence of the longitudinal soundwave mode c_{11} in the two dimensional dimer system SrCu_{2}(BO_{3})_{2} is presented. c_{11}(T) shows anomalies due to strong interdimer spin-strain coupling. We can quantitatively interpret the temperature dependence of c_{11}(T) together with the magnetic susceptibility $\chi_{m}(T)$ with a molecular field approximation of coupled dimer triplets. The sound velocity up to 50T shows very sharp softening between the magnetization plateaus at low temperature. We argue that these pronounced effects arise from a resonant interaction between the phonons and the magnetic excitations which show softening between the plateaus.

Keywords

magnetic materials and spin systems phonon physics magnetization

Cite

@article{arxiv.cond-mat/0005052,
  title  = {Soundwave Anomalies in SrCu_{2}(BO_{3})_{2}},
  author = {S. Zherlitsyn and S. Schmidt and B. Wolf and H. Schwenk and B. Lüthi and H. Kageyama and K. Onizuka and Y. Ueda and K. Ueda},
  journal= {arXiv preprint arXiv:cond-mat/0005052},
  year   = {2019}
}

Soundwave Anomalies in SrCu_{2}(BO_{3})_{2}

Abstract

Keywords

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