Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

Journal Article

Chu, J.-H., J. F. Liu, H. Zhang, K. Noordhoek, S.C. Riggs, M. Shapiro, C.R. Serro, D. Yi, M. Mellisa, S.J. Suresha, C. Frontera, E. Arenholz, A. Vishwanath, X. Marti, I.R. Fisher, Ramamoorthy Ramesh

10.1088/1367-2630/ab534c

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. © 2019 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.

New Journal of Physics

21

2019

13672630

cited By 0

Ramesh Lab