Theory of anisotropic hopping transport due to spiral correlations in the spin-glass phase of underdoped cuprate superconductors

Valeri N. Kotov; Oleg P. Sushkov

doi:10.1103/PhysRevB.72.184519

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Theory of anisotropic hopping transport due to spiral correlations in the spin-glass phase of underdoped cuprate superconductors

Valeri N. Kotov, Oleg P. Sushkov

DOI 10.1103/PhysRevB.72.184519 · Physical Review B

T1

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Abstract

We study the in-plane resistivity anisotropy in the spin-glass phase of the high-Tc cuprates, on the basis of holes moving in a spiral spin background. This picture follows from analysis of the extended t−J model with Coulomb impurities. In the variable-range hopping regime the resistivity anisotropy is found to have a maximum value of around 90%, and it decreases with temperature, in excellent agreement with experiments in La2−xSrxCuO4. In our approach the transport anisotropy is due to the noncollinearity of the spiral spin state, rather than an intrinsic tendency of the charges to self-organize.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown