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Title: Insights from the study of high-temperature interface superconductivity
Authors: Panagopoulos, Christos
Pereiro, J.
Bollinger, A. T.
Logvenov, G.
Gozar, A.
Božović, I.
Keywords: DRNTU::Science::Physics
Issue Date: 2012
Source: Pereiro, J., Bollinger, A. T., Logvenov, G., Gozar, A., Panagopoulos, C., & Božović, I. (2012). Insights from the study of high-temperature interface superconductivity. Philosophical transactions of the royal society A : mathematical, physical and engineering sciences, 370(1977), 4890-4903.
Series/Report no.: Philosophical transactions of the royal society A : mathematical, physical and engineering sciences
Abstract: A brief overview is given of the studies of high-temperature interface superconductivity based on atomic-layer-by-layer molecular beam epitaxy (ALL-MBE). A number of difficult materials science and physics questions have been tackled, frequently at the expense of some technical tour de force, and sometimes even by introducing new techniques. ALL-MBE is especially suitable to address questions related to surface and interface physics. Using this technique, it has been demonstrated that high-temperature superconductivity can occur in a single copper oxide layer—the thinnest superconductor known. It has been shown that interface superconductivity in cuprates is a genuine electronic effect—it arises from charge transfer (electron depletion and accumulation) across the interface driven by the difference in chemical potentials rather than from cation diffusion and mixing. We have also understood the nature of the superconductor–insulator phase transition as a function of doping. However, a few important questions, such as the mechanism of interfacial enhancement of the critical temperature, are still outstanding.
DOI: 10.1098/rsta.2012.0219
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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