Eb. Amitin et al., SPIN CORRELATION-EFFECTS AND THE TRANSVERSE MAGNETORESISTANCE IN YBCOSINGLE-CRYSTALS WITH DIFFERENT OXYGEN CONTENTS, JETP letters, 62(6), 1995, pp. 490-495
The linear (in the magnetic field) magnetoresistance measured in YBa2C
u3Ox crystals in the normal state is explained in terms of the interac
tion of current carriers with spin correlations in the CuO2 layer. The
temperature dependence of this contribution is compared with the beha
vior of the spin correlation function calculated in the two-dimensiona
l Heisenberg model. Estimates are obtained for the exchange integral i
n the cuprate layer for samples with oxygen content x=6.88 and 6.62. (
C) 1995 American Institute of Physics.