期刊
SCIENCE
卷 349, 期 6247, 页码 506-509出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1262054
关键词
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资金
- Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers from the Japanese Society for the Promotion of Science [R2604]
- PRESTO, Japan Science and Technology Agency (JST)
- Grant for Basic Science Research Projects from the Sumitomo Foundation
- U.S. National Science Foundation [DMR-1309929]
- U.S. National Science Foundation I2CAM International Materials Institute Award [DMR-0844115]
- NSF [PHYS-1066293]
- [25707030]
- [24740243]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1309929] Funding Source: National Science Foundation
A fundamental challenge to our current understanding of metals is the observation of qualitative departures from Fermi liquid behavior. The standard view attributes such non-Fermi liquid phenomena to the scattering of electrons off quantum critical fluctuations of an underlying order parameter. Although the possibility of non-Fermi liquid behavior isolated from the border of magnetism has long been speculated, no experimental confirmation has been made. Here, we report on the observation of a strange metal region away from a magnetic instability in an ultrapure single crystal. In particular, we show that the heavy-fermion superconductor beta-YbAlB4 forms a possible phase with strange metallic behavior across an extensive pressure regime, distinctly separated from a high-pressure magnetic quantum phase transition by a Fermi liquid phase.
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