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The SU(2)xU(1) Chern-Simons spin-charge gauge approach developed earlier todescribe the transport properties of the cuprate superconductors in the``pseudogap'' regime, in particular, the metal-insulator crossover of thein-plane resistivity, is generalized to the ``strange metal'' phase at highertemperature/doping. The short-range antiferromagnetic order and the gauge fieldfluctuations, which were the key ingredients in the theory for the pseudogapphase, also play an important role in the present case. The main differencebetween these two phases is caused by the existence of an underlyingstatistical $\pi$-flux lattice for charge carriers in the former case, whereasthe background flux is absent in the latter case. The Fermi surface thenchanges from small ``arcs'' in the pseudogap to a rather large closed line inthe strange metal phase. As a consequence the celebrated linear in T dependenceof the in-plane and out-of-plane resistivity is shown explicitly to recover.The doping concentration and temperature dependence of theoretically calculatedin-plane and out-of-plane resistivity, spin-relaxation rate and AC conductivityare compared with experimental data, showing good agreement.Comment: 14 pages, 5 .eps figures, submitted to Phys. Rev. B, revised version  submitted on 24 Oc

physical review. b, condensed matter and materials physics

Transport properties in the strange-metal phase of high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>cuprates: Spin-charge gauge theory versus experiments

Transport properties in the strange-metal phase of high-Tccuprates: Spin-charge gauge theory versus experiments