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Scaling between magnetic field and temperature in the high-temperature superconductor BaFe2(As1-xPx)2

Journal Article · · Nature Physics
DOI:https://doi.org/10.1038/nphys3773· OSTI ID:1530254
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. 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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1530254
Journal Information:
Nature Physics, Journal Name: Nature Physics Journal Issue: 10 Vol. 12; ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)
Country of Publication:
United States
Language:
English

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Scale-invariant magnetoresistance in a cuprate superconductor journal August 2018
Quantum criticality and DBI magneto-resistance journal February 2017
Magnetotransport in a model of a disordered strange metal text January 2017
Nematicity, magnetism and superconductivity in FeSe journal December 2017
Backreacted DBI magnetotransport with momentum dissipation journal October 2017
Coexistence of orbital and quantum critical magnetoresistance in FeSe 1 − x S x journal September 2019
Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi 2 Ir 2 O 7 journal November 2019
Magnetotransport in a Model of a Disordered Strange Metal journal May 2018
A unified form of low-energy nodal electronic interactions in hole-doped cuprate superconductors journal December 2019
Quantum Criticality and DBI Magneto-resistance text January 2016
Universal T-linear resistivity and Planckian dissipation in overdoped cuprates journal November 2018
Planckian dissipation, minimal viscosity and the transport in cuprate strange metals journal January 2019
Coherent Superconductivity with a Large Gap Ratio from Incoherent Metals journal October 2018
Correlation between scale-invariant normal-state resistivity and superconductivity in an electron-doped cuprate text January 2019

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