Pressure-induced melting of magnetic order and emergence of a new quantum state in α-RuC l3

Zhe Wang, Jing Guo, F. F. Tafti, Anthony Hegg, Sudeshna Sen, Vladimir A. Sidorov, Le Wang, Shu Cai, Wei Yi, Yazhou Zhou, Honghong Wang, Shan Zhang, Ke Yang, Aiguo Li, Xiaodong Li, Yanchun Li, Jing Liu, Youguo Shi, Wei Ku, Qi WuRobert J. Cava, Liling Sun

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22 Scopus citations

Abstract

Here we report the observation of pressure-induced melting of antiferromagnetic (AFM) order and the emergence of a new state in the honeycomb-lattice halide α-RuCl3, a candidate compound in the proximity of quantum spin liquid state. Our high-pressure heat capacity measurements demonstrate that the AFM order smoothly melts away at a critical pressure (PC) below 1 GPa. Intriguingly, the AFM transition temperature displays an increase upon applying pressure below the PC, in stark contrast to usual phase diagrams, for example, in pressurized parent compounds of unconventional superconductors. Furthermore, a stable magnetoresistance is observed in the high-pressure phase above PC which is robust against pressure up to ∼140 GPa.

Original languageEnglish (US)
Article number245149
JournalPhysical Review B
Volume97
Issue number24
DOIs
StatePublished - Jun 29 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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