Spin-gap effect on resistivity in the t-J model
arXiv:cond-mat/9903243 · doi:10.1143/JPSJ.69.3497
Abstract
We calculate the spin-gap effect on dc resistivity in the t-J model of high- cuprates by using the Ginzburg-Landau theory coupled with a gauge field as its effective field theory to get , where is the spin-gap onset temperature. By taking the compactness of massive gauge field into account, the exponent deviates from its mean-field value 1/2 and becomes a nonuniversal -dependent quantity, which improves the correspondence with the experiments.
4 pages, REVTeX format, 2 eps-figures