Superconductivity and Quantum Spin Disorder in Cuprates

Details Superconductivity and Quantum Spin Disorder in Cuprates Superconductivity and Quantum Spin Disorder in Cuprates

1999-07-26

arxiv.org/abs/cond-mat/9907382v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.83.4848

A fundamental connection between superconductivity and quantum spin fluctuations in underdoped cuprates, is revealed. A variational calculation shows that {\em Cooper pair hopping} strongly reduces the local magnetization $m_0$. This effect pertains to recent neutron scattering and muon spin rotation measurements in which $m_0$ varies weakly with hole doping in the poorly conducting regime, but drops precipitously above the onset of superconductivity.

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