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Title: Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

Journal Article · · New Journal of Physics
ORCiD logo [1];  [2];  [3];  [3];  [4];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [5];  [4];  [11]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of Washington, Seattle, WA (United States)
  2. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  4. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Univ. of California, Berkeley, CA (United States)
  6. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Univ. of California, Berkeley, CA (United States)
  7. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  9. Inst. de Ciencia de Materials de Barcelona, ICMAB-CSIC, Ballaterra (Spain)
  10. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  11. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division

We report the observation of a linear magnetoresistance in single crystals and epitaxial thin films of the pyrochlore iridate Bi2Ir2O7. 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 Bi2Ir2O7 bears strikingly resemblance to the scale invariant magnetoresistance observed in the strange metal phase in high Tc cuprates. However, the residual resistivity of Bi2Ir2O7 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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; AC02-76SF00515
OSTI ID:
1597485
Journal Information:
New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 11 Vol. 21; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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