Normal state property of the tJ model
Abstract
Using the spinhole coherent state representation and taking a long range antiferromagnetic Nèel order as a background of the localized spin degree part, we have studied the normal state behavior of the tJ model, and shown that a strongly shortrange antiferromagnetic correlation of the localized spin degree part is responsible for the anomalous nonKorringalike relaxation behavior of the planar copper spin, the Korringalike behavior of the planar oxygen spin may derive from the charge degree part describing a ZhangRice spinsinglet; The charge degree part feels a strongly staggered magnetic field induced by this shortrange antiferromagnetic correlation as a doping hole hopping, this staggered magnetic field enforces the charge degrees to have different responses to external magnetic and electric fields and to show two relaxation rate behaviors corresponding to the planar resistivity and Hall angle, respectively. We have found that the temperature dependence of magnetoresistance is $T^{n}$, $n\simeq 3$, near the optimal doping, $n\simeq 4$, in the underdoping region, violating Kohler's rule, the transport relaxation rate is of the order of $2k_{B}T$, all that are consistent with the normal state of the cuprate superconductors.
 Publication:

arXiv eprints
 Pub Date:
 February 1996
 arXiv:
 arXiv:condmat/9602021
 Bibcode:
 1996cond.mat..2021L
 Keywords:

 Condensed Matter
 EPrint:
 21 pages, no figures, Revtex