Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • A. Glamazda - , Chung-Ang University (Author)
  • Y. S. Choi - , Chung-Ang University (Author)
  • S. H. Do - , Chung-Ang University (Author)
  • S. Lee - , Chung-Ang University (Author)
  • P. Lemmens - , Technical University of Braunschweig (Author)
  • A. N. Ponomaryov - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • S. A. Zvyagin - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • J. Wosnitza - , Chair of Physics of High Magnetic Fields, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Dita Puspita Sari - , Osaka University, RIKEN (Author)
  • I. Watanabe - , RIKEN (Author)
  • K. Y. Choi - , Chung-Ang University (Author)

Abstract

We report on zero-field muon spin rotation, electron-spin resonance, and polarized Raman scattering measurements of the coupled quantum spin ladder Ba2CuTeO6. Zero-field muon spin rotation and electron-spin resonance probes disclose a successive crossover from a paramagnetic through a spin-liquid-like into a magnetically ordered state with decreasing temperature. More significantly, the two-magnon Raman response obeys a T-linear scaling relation in its peak energy, linewidth, and intensity. This critical scaling behavior presents an experimental signature of proximity to a quantum-critical point from an ordered side in Ba2CuTeO6.

Details

Original languageEnglish
Article number184430
JournalPhysical Review B
Volume95
Issue number18
Publication statusPublished - 30 May 2017
Peer-reviewedYes