Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

Jiun-Haw Chu; Jian Liu; Han Zhang; Kyle Noordhoek; Scott C Riggs; Maxwell Shapiro; Claudy Ryan Serro; Di Yi; M Mellisa; S J Suresha; C Frontera; E Arenholz; Ashvin Vishwanath; Xavi Marti; I R Fisher; R Ramesh

doi:10.1088/1367-2630/ab534c

New Journal of Physics (Jan 2019)

Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

Jiun-Haw Chu,
Jian Liu,
Han Zhang,
Kyle Noordhoek,
Scott C Riggs,
Maxwell Shapiro,
Claudy Ryan Serro,
Di Yi,
M Mellisa,
S J Suresha,
C Frontera,
E Arenholz,
Ashvin Vishwanath,
Xavi Marti,
I R Fisher,
R Ramesh

Affiliations

Jiun-Haw Chu: ORCiD; Department of Physics, University of California , Berkeley, CA 94720, United States of America; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America; Department of Physics, University of Washington , Seattle, WA 98195, United States of America
Jian Liu: Department of Physics, University of California , Berkeley, CA 94720, United States of America; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America; Department of Physics and Astronomy, University of Tennessee , Knoxville, TN 37996, United States of America
Han Zhang: Department of Physics and Astronomy, University of Tennessee , Knoxville, TN 37996, United States of America
Kyle Noordhoek: Department of Physics and Astronomy, University of Tennessee , Knoxville, TN 37996, United States of America
Scott C Riggs: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University , Stanford, CA 94305, United States of America; Stanford Institute of Energy and Materials Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park 94025, CA 94305, United States of America
Maxwell Shapiro: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University , Stanford, CA 94305, United States of America; Stanford Institute of Energy and Materials Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park 94025, CA 94305, United States of America
Claudy Ryan Serro: Department of Materials Science and Engineering, University of California , Berkeley, CA 94720, United States of America
Di Yi: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University , Stanford, CA 94305, United States of America; Department of Materials Science and Engineering, University of California , Berkeley, CA 94720, United States of America
M Mellisa: Department of Physics, University of California , Berkeley, CA 94720, United States of America
S J Suresha: Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
C Frontera: Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, Campus UAB, E-08193 Ballaterra, Spain
E Arenholz: Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
Ashvin Vishwanath: Department of Physics, University of California , Berkeley, CA 94720, United States of America; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America
Xavi Marti: Department of Materials Science and Engineering, University of California , Berkeley, CA 94720, United States of America
I R Fisher: Department of Applied Physics and Geballe Laboratory for Advanced Materials, Stanford University , Stanford, CA 94305, United States of America; Stanford Institute of Energy and Materials Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park 94025, CA 94305, United States of America
R Ramesh: Department of Physics, University of California , Berkeley, CA 94720, United States of America; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States of America; Department of Materials Science and Engineering, University of California , Berkeley, CA 94720, United States of America

DOI: https://doi.org/10.1088/1367-2630/ab534c
Journal volume & issue: Vol. 21, no. 11
p. 113041

Abstract

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We report the observation of a linear magnetoresistance in single crystals and epitaxial thin films of the pyrochlore iridate Bi _2 Ir _2 O _7 . The linear magnetoresistance is positive and isotropic at low temperatures, without any sign of saturation up to 35 T. As temperature increases, the linear field dependence gradually evolves to a quadratic field dependence. The temperature and field dependence of magnetoresistance of Bi _2 Ir _2 O _7 bears strikingly resemblance to the scale invariant magnetoresistance observed in the strange metal phase in high T _c cuprates. However, the residual resistivity of Bi _2 Ir _2 O _7 is more than two orders of magnitude higher than the curpates. Our results suggest that the correlation between linear magnetoresistance and quantum fluctuations may exist beyond high temperature superconductors.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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