Note on Anisotropy of Resistivity in Hidden Ordered State of URu_2Si_2
K. Miyake, J. Flouquet
TL;DR
This paper explains the anisotropic resistivity behavior in the hidden ordered phase of URu2Si2 by assuming an antiferro-quadrupolar order with specific symmetry, accounting for observed temperature dependencies.
Contribution
It proposes a theoretical explanation for resistivity anisotropy in URu2Si2 based on quadrupolar order symmetry, linking microscopic order to macroscopic transport properties.
Findings
Resistivity along c-axis varies as T^2 in HO phase.
Resistivity in ab-plane varies linearly with T.
The model supports quadrupolar order as the hidden order parameter.
Abstract
On an assumption that the HO is the antiferro-quadrupolar order with \Gamma_{5} (Q_{z(x+y)} and Q_{z(x-y)}) symmetry, the anisotropy in temperature dependence of resistivity (\rho_{c}\propto T^{2}, and \rho_{ab}\propto T) in the HO phase of URu_2Si_2 is explained.
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