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Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

  • Author(s): Chu, JH
  • Liu, J
  • Zhang, H
  • Noordhoek, K
  • Riggs, SC
  • Shapiro, M
  • Serro, CR
  • Yi, D
  • Mellisa, M
  • Suresha, SJ
  • Frontera, C
  • Arenholz, E
  • Vishwanath, A
  • Marti, X
  • Fisher, IR
  • Ramesh, R
  • et al.
Abstract

We report the observation of a linear magnetoresistance in single crystals and epitaxial thin films of the pyrochlore iridate Bi Ir O . 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 Ir O bears strikingly resemblance to the scale invariant magnetoresistance observed in the strange metal phase in high T cuprates. However, the residual resistivity of Bi Ir O 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. 2 2 7 2 2 7 c 2 2 7

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