Using Inhomogeneity to Raise Superconducting Critical Temperatures

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dc.creatorLoh, Y. L.
dc.creatorCarlson, E. W.
dc.date2006-11-28
dc.date.accessioned2026-07-07T07:31:30Z
dc.date.available2026-07-07T07:31:30Z
dc.descriptionSuperconductors with low superfluid density can be described by XY models. In such models the scale of the transition temperature T_c is largely set by the zero temperature phase stiffness (helicity modulus), a long-wavelength property of the system: T_c = A Upsilon(0). However, the constant A is a non-universal number, depending on dimensionality and the degree of inhomogeneity. In this Letter, we discuss strategies for maximizing A for 2D XY models, that is, how to maximize the transition temperature with respect to the zero temperature, long wavelength properties. We find that a framework type of inhomogeneity can increase the transition temperature significantly. For comparison, we present similar results for Ising models.
dc.description4 pages, 4 figures, submitted to Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0611719
dc.identifierhttp://arxiv.org/abs/cond-mat/0611719
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/118777
dc.subjectSuperconductivity
dc.subjectStatistical Mechanics
dc.titleUsing Inhomogeneity to Raise Superconducting Critical Temperatures
dc.typetext

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