Title: Magnetoresistance Scaling Reveals Symmetries of the Strongly Correlated Dynamics in BaFe2 ( As1-x Px )2

Journal Article · · Physical Review Letters
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  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Cornell Univ., Ithaca, NY (United States)

The phenomenon of T-linear resistivity commonly observed in a number of strange metals has been widely seen as evidence for the breakdown of the quasiparticle picture of metals. This study shows that a recently discovered H/T scaling relationship in the magnetoresistance of the strange metal BaFe2(As1-xPx)2 is independent of the relative orientations of current and magnetic field. Rather, its magnitude and form depend only on the orientation of the magnetic field with respect to a single crystallographic axis: the direction perpendicular to the magnetic iron layers. In this work, this finding suggests that the magnetotransport scaling does not originate from the conventional averaging or orbital velocity of quasiparticles as they traverse a Fermi surface, but rather from dissipation arising from two-dimensional correlations.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Novel Pathways to Quantum Coherence in Materials (NPQC); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation; National Science Foundation (NSF); State of Florida; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
89233218CNA000001; AC02-05CH11231
OSTI ID:
1571118
Report Number(s):
LA-UR-18-30069; ark:/13030/qt3h1674dn
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 121; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi 2 Ir 2 O 7 journal November 2019
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$_7$ text January 2013