期刊
PHYSICAL REVIEW B
卷 97, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.245149
关键词
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资金
- National Key Research and Development Program of China [2017YFA0302900, 2016YFA0300300, 2017YFA0303103]
- NSF of China [11427805, 11404384, U1532267, 11604376, 11674220, 11447601]
- Strategic Priority Research Program (B) of the Chinese Academy of Sciences [XDB07020300]
- Ministry of Science and Technology [2016YFA0300500, 2016YFA0300501]
- Gordon and Betty Moore Foundation EPiQS Initiative [GBMF-4412]
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 alpha-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 P(c,)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 P-c which is robust against pressure up to similar to 140 GPa.
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