Continuos Doping of La2CuO4+x Thin Films
2015-09
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Continuos Doping of La2CuO4+x Thin Films
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2015-09
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Finding more efficient ways of exploring the doping phase diagrams of high temperature superconductors as well as probing the fundamental properties of these materials are essential ingredients for driving the discovery of new materials. We use a doping technique involving gating with ionic liquids to systematically and continuously tune the Tc of superconducting La2CuO4+x thin films. We probe both the transport properties and the penetration depth of these samples and find that Homes scaling, lambda^-2 ~ sigma*Tc, is obeyed, consistent with these materials being in the dirty limit. This result is independent of the precise mechanism for the gating process as all of the parameters of the scaling relationship are determined by direct measurements on the films.
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University of Minnesota Ph.D. dissertation. 2015. Major: Physics. Advisor: Allen Goldman. 1 computer file (PDF); viii, 93 pages.
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Kinney, Joseph. (2015). Continuos Doping of La2CuO4+x Thin Films. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/182298.
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