Random magnetic field and quasi-particle transports in the mixed state of high T_{c} cuprates

Details Random magnetic field and quasi-particle transports in the mixed state of high T_{c} cuprates Random magnetic field and quasi-particle transports in the mixed state of high T_{c} cuprates

2000-03-15

arxiv.org/abs/cond-mat/0003251v4

Physics

Condensed Matter

Superconductivity

4+ pages, 1 figure. To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.86.316

By a singular gauge transformation, the quasi-particle transport in the mixed state of high T_{c} cuprates is mapped into charge-neutral composite Dirac fermion moving in short-range correlated random scalar and long-range correlated vector potential. A fully quantum mechanical approach to longitudinal and transverse thermal conductivities is presented. The semi-classical Volovik effect is presented in a quantum mechanical way. The quasi-particle scattering from the random magnetic field which was completely missed in all the previous semi-classical approaches is the dominant scattering mechanism at sufficiant high magnetic field. The implications for experiments are discussed.

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