Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6
Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6
Glamazda, A.; Choi, Y. S.; Do, S.-H.; Lee, S.; Lemmens, P.; Ponomaryov, A. N.; Zvyagin, S. A.; Wosnitza, J.; Sari, D. P.; Watanabe, I.
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.
Beteiligte Forschungsanlagen
- Hochfeld-Magnetlabor (HLD)
-
Physical Review B 95(2017), 184430
DOI: 10.1103/PhysRevB.95.184430
Cited 8 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-25676