Magnetic Quantum Critical Point in YBa_2Cu_3O_{7-delta}? Resolving the Correlation Length Controversy

R. S. Markiewicz

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arXiv · cond-mat/0312595

Magnetic Quantum Critical Point in YBa_2Cu_3O_{7-delta}? Resolving the Correlation Length Controversy

R. S. Markiewicz

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Abstract

A mode coupling calculation which previously explained the Mott gap collapse induced in cuprates by electron doping is applied to the analogous problem of hole doping. A plateau in the q-space susceptibility is found to inhibit the rate of susceptibility divergence as T goes to 0. This effect could reconcile neutron and NMR measurements of the correlation length in this regime, and clarify the issue of proximity to a quantum critical point.

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R. S. Markiewicz. 2003-12-22. Magnetic Quantum Critical Point in YBa_2Cu_3O_{7-delta}? Resolving the Correlation Length Controversy. https://arxiv.org/abs/cond-mat/0312595

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