Spin Conductivity and Spin-Charge Separation in the High T_c Cuprates

1995/07/14 by Qimiao Si, Si, Qimiao
Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9507050

12 pages, REVTEX, no figures

arxiv created 1995/07/14 · arxiv updated 2009/11/30

Abstract

We study both the spin and electrical conductivities in models of relevance to the high T_c cuprates. These models describe metallic states with or without spin-charge separation. We demonstrate that, given a linear in temperature dependence of the electrical resistivity, the spin resistivity should also be linear in temperature in the absence of spin-charge separation and under conditions appropriate at least for the optimally doped cuprates, but is in general \it not so in the presence of spin-charge separation. Based on these results, we propose to use the temperature dependence of the electron spin diffusion constant to diagnose spin-charge separation in the cuprates.

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