Temperature dependent change in the symmetry of the order parameter in an electron-doped high-temperature superconductor

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dc.creatorBalci, Hamza
dc.creatorGreene, R. L.
dc.date2004-02-09
dc.date.accessioned2026-07-07T02:56:24Z
dc.date.available2026-07-07T02:56:24Z
dc.descriptionWe present specific heat measurements which show an unexpected phase transition from d-wave symmetry to s-wave symmetry as the temperature is reduced in electron-doped Pr$_{2-x}$Ce$_{x}$CuO$_{4-δ}$ (PCCO), in both optimal and over-doped single crystals. The field dependence of electronic specific heat (C$_{el}$) is linear at T=2K, consistent with s-wave symmetry, and non-linear, consistent with d-wave symmetry, at T$\geq$3K. This behavior is most consistent with a phase transition in the symmetry of the order parameter as the temperature is changed. Such a phase transition could be an explanation for the previous controversial results of different experiments, performed at different temperatures in the electron-doped cuprates.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0402263
dc.identifierhttp://arxiv.org/abs/cond-mat/0402263
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23307
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleTemperature dependent change in the symmetry of the order parameter in an electron-doped high-temperature superconductor
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