Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Validity of Kohler's rule in the pseudogap phase of the cuprate
  superconductors   We report in-plane resistivity ($\rho$) and transverse magnetoresistance (MR)
measurements in underdoped HgBa$_2$CuO$_{4+\delta}$ (Hg1201). Contrary to the
longstanding view that Kohler's rule is strongly violated in underdoped
cuprates, we find that it is in fact satisfied in the pseudogap phase of
Hg1201. The transverse MR shows a quadratic field dependence,
$\delta\rho/\rho_o=a H^{2}$, with $a(T)\propto T^{-4}$. In combination with the
observed $\rho\propto T^2$ dependence, this is consistent with a single
Fermi-liquid quasiparticle scattering rate. We show that this behavior is
universal, yet typically masked in cuprates with lower structural symmetry or
strong disorder effects.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol