On the theory of the spin gap in bilayer cuprates

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dc.creatorIoffe, L. B.
dc.creatorLarkin, A. I.
dc.creatorMillis, A. J.
dc.creatorAltshuler, B. L.
dc.date1993-12-14
dc.date.accessioned2026-07-07T03:07:02Z
dc.date.available2026-07-07T03:07:02Z
dc.descriptionWe formulate and solve a model of two planes of antiferromagnetically correlated electrons coupled together by a weak antiferromagnetic interaction of strength $λ$. We show that in-plane antiferromagnetic correlations dramatically enhance the pairing effect of the interplane interaction. For the case where the in-plane correlation length $κ^{-1} \sim T^{-1/2}$, we find that the interaction $λ$ leads to spin pairing at a temperature $T^{*} \sim λ$, much higher than the usual BCS result $exp(-J/λ)$. We suggest that this is a possible explanation of the spin gap effects observed below $T^{*} \sim 150K$ in $YBa_2Cu_3O_{6.6}$.
dc.identifierhttps://arxiv.org/abs/cond-mat/9312056
dc.identifierhttp://arxiv.org/abs/cond-mat/9312056
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27028
dc.subjectCondensed Matter
dc.titleOn the theory of the spin gap in bilayer cuprates
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