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

Cornell Affiliated Author(s)

Author

Ian Hayes
Zeyu Hao
Nikola Maksimovic
Sylvia Lewin
Mun Chan
Ross McDonald
B. J. Ramshaw
Joel Moore
James Analytis

Abstract

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. 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. © 2018 American Physical Society.

Date Published

Journal

Physical Review Letters

Volume

121

Issue

19

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056549035&doi=10.1103%2fPhysRevLett.121.197002&partnerID=40&md5=9a58d715e314b3fe198c6de6d5ef7490

DOI

10.1103/PhysRevLett.121.197002

Group (Lab)

Brad Ramshaw Group

Funding Source

1106400
1157490
DGE 1106400

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