Investigating Kohler’s Rule in the Strange Metal Regime

Abstract

The cuprate superconductors are very unconventional materials. It is therefore noteworthy when they display fairly conventional properties. For example, it was recently found that for the mercury-based cuprate superconductor, Hg1201, Kohler’s rule is obeyed in the underdoped pseudogap regime [2]. Kohler’s rule is typically obeyed by conventional metals, with Fermi-liquid characteristics, such as a reconstructed Fermi surface and a single, temperature-dependent scattering rate. However, for the normal-state of the Hg1201, where the resistivity is linear in temperature (near optimal doping), Kohler’s rule was found to be violated in magnetic fields of up to 9 T [1]. Here we investigate if Kohler’s rule to test if it is truly violated in the strange metal regime by using magnetic fields up to 31 T.