Spin Gaps and Spin Dynamics in La_{2-x}Sr_xCuO_4 and YBa_2Cu_3O7_δ

Abstract

A magnetic susceptibility which decreases with decreasing temperature is observed in all $Cu{O}_2$ based superconductors with less than optimal doping. We propose that in $L{a}_{2-x}S{r}_{x}Cu{O}_4$ this is due to antiferromagnetic ordering which is prevented by the low spatial dimensionality while in $YB{a}_{2}C{u}_3{O}_{6.6}$ it is due to the interplay between antiferromagnetic fluctuations within a plane and singlet pairing of electrons between nearest neighbor planes.

figures available upon request, 12 pages

Cited by in corpus (111)

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