Possible scale invariant linear magnetoresistance in pyrochlore iridates Bi2Ir2O7

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 de...

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Bibliographic Details
Published in:New journal of physics 2019-11, Vol.21 (11), p.113041
Main Authors: Chu, Jiun-Haw, Liu, Jian, Zhang, Han, Noordhoek, Kyle, Riggs, Scott C, Shapiro, Maxwell, Serro, Claudy Ryan, Yi, Di, Mellisa, M, Suresha, S J, Frontera, C, Arenholz, E, Vishwanath, Ashvin, Marti, Xavi, Fisher, I R, Ramesh, R
Format: Article
Language:English
Subjects:
Cuprates
Fields (mathematics)
High temperature superconductors
Invariants
linear magnetoresistance
Low temperature
Magnetoresistance
Magnetoresistivity
MATERIALS SCIENCE
Number theory
Physics
pyrochlore iridates
Quantum phenomena
Residual resistivity
scale invariance
Single crystals
Temperature dependence
Thin films
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Summary: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.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ab534c