Diamagnetism and density-wave order in the pseudogap regime of YBa 2 Cu 3 O 6 + x
Hayward, Lauren E.
Achkar, Andrew J.
Hawthorn, David G.
Melko, Roger G.
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CitationHayward, Lauren E., Andrew J. Achkar, David G. Hawthorn, Roger G. Melko, and Subir Sachdev. 2014. “ Diamagnetism and Density-Wave Order in the Pseudogap Regime of YBa 2 Cu 3 O 6 + x .” Phys. Rev. B 90 (9) (September). doi:10.1103/physrevb.90.094515.
AbstractClear experimental evidence of charge density-wave correlations competing with superconducting order in YBCO have thrust their relationship with the pseudogap regime into the spotlight. To aid in characterizing the pseudogap regime, we propose a dimensionless ratio of the diamagnetic susceptibility to the correlation length of the charge density-wave correlations. Using Monte Carlo simulations, we compute this ratio on the classical model of Hayward et al. [Science 343, 1336 (2014)], which describes angular fluctuations of a multicomponent order, capturing both superconducting and density-wave correlations. We compare our results with available data on YBa2Cu3O6+x, and propose experiments to clarify the value of this dimensionless ratio using existing samples and techniques.
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