Superconductivity and Quantum Spin Disorder in Cuprates
classification
❄️ cond-mat.str-el
cond-mat.supr-con
keywords
spinsuperconductivitycupratesquantumabovecalculationconductingconnection
read the original abstract
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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