期刊
PHYSICAL REVIEW RESEARCH
卷 2, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.033367
关键词
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资金
- Japan Society for the Promotion of Science (JSPS) [JP19H05824, JP15H03688, JP15KK0160, JP18H01175, JP18H01177, JP18H05227, JP19H00649, JP20H02600, JP20H05162, JP20K21139, JP15H05852]
- Japan Science and Technology Agency (JST) CREST program [JPMJCR19T5]
- High Field Magnet Laboratory (HFML) at Radboud University
- Netherlands Organisation for Scientific Research (NWO) [16METL01]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [835279-Catch-22]
Non-Fermi liquids are strange metals whose physical properties deviate qualitatively from those of conventional metals due to strong quantum fluctuations. In this paper, we report transport measurements on the FeSe1-xSx superconductor, which has a quantum critical point of a nematic order without accompanying antiferromagnetism. We find that in addition to a linear-in-temperature resistivity rho(xx) proportional to T, which is close to the Planckian limit, the Hall angle varies as cot theta(H) proportional to T-2 and the low-field magnetoresistance is well scaled as Delta rho(xx)/rho(xx) proportional to tan(2) theta(H) in the vicinity of the nematic quantum critical point. This set of anomalous charge transport properties show striking resemblance with those reported in cuprate, iron-pnictide, and heavy fermion superconductors, demonstrating that the critical fluctuations of a nematic order with q approximate to 0 can also lead to a breakdown of the Fermi liquid description.
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