Abstract

The temperature dependent resistivity ρ(T) of high-T c cuprates at temperatures above the pseudogap regime has recently been interpreted in the framework of the two-dimensional (2D) Heisenberg model [1]. The approach proposed in Ref. 1 is based on three basic assumptions: (i) the dominant scattering mechanism in high-T c ’s in the whole temperature range is of magnetic origin; (ii) the specific temperature dependence of the resistivity ρ(T) can be described by the inverse quantum conductivity σ-1 with the inelastic length L φ being fully controlled, via a strong interaction of holes with Cu2+ spins, by the magnetic correlation length ξ m , and, finally, (iii) the proper 2D expressions should be used for calculating the quantum conductivity with L φ∼ξ m .

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