期刊
NATURE PHYSICS
卷 12, 期 10, 页码 916-919出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS3773
关键词
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资金
- Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory under the US Department of Energy [DE-AC02-05CH11231]
- Quantum Materials FWP
- US Department of Energy Office of Basic Energy Sciences, Materials Sciences and Engineering Division [DE-AC02-05CH11231]
- Gordon and Betty Moore Foundations EPiQS Initiative [GBMF4374]
- National Science Foundation Cooperative [DMR 1157490]
- Department of Energy
Many exotic metallic systems have a resistivity that varies linearly with temperature, and the physics behind this is thought to be connected to high-temperature superconductivity in the cuprates and iron pnictides(1-9). Although this phenomenon has attracted considerable attention, it is unclear how the relevant physics manifests in other transport properties, for example their response to an applied magnetic field. We report measurements of the high-field magnetoresistance of the iron pnictide superconductor BaFe2(As1-xPx)(2) and find that it obeys an unusual scaling relationship between applied magnetic field and temperature, with a conversion factor given simply by the ratio of the Bohr magneton and the Boltzmann constant. This suggests that magnetic fields probe the same physics that gives rise to the T-linear resistivity, providing a new experimental clue to this long-standing puzzle.
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