LERIDON, Brigitte; CAPRARA, Sergio; VANACKEN, Johan; MOSHCHALKOV, V. V.; VIGNOLLE, Baptiste; PORWAL, Rajni; BUDHANI, R. C.; ATTANASI, Alessandro; GRILLI, Marco; LORENZANA, José

doi:10.1088/1367-2630/ab976e

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LERIDON, Brigitte
Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) [LPEM]

CAPRARA, Sergio
Department of Physics
Institute for Complex Systems [Rome] [CNR - ISC]

VANACKEN, Johan
Catholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]

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New Journal of Physics. 2020-07-01, vol. 22, n° 7, p. 073025

Institute of Physics: Open Access Journals

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Solid 4He may acquire superfluid characteristics due to the frustration of the solid phase at grain boundaries. Here, we show that an analogous effect occurs in systems with competition among charge-density-waves (CDWs) and superconductivity in the presence of disorder, as cuprate or dichalcogenide superconductors. The CDWs breaks apart in domains with topologically protected filamentary superconductivity (FSC) at the interfaces. Transport experiments carried out in underdoped cuprates with the magnetic field acting as a control parameter are shown to be in excellent agreement with the theoretical expectation. At high temperature and low fields we find a transition from CDWs to fluctuating superconductivity, weakly affected by disorder, while at high field and low temperature the protected filamentary superconducting phase appears in close analogy with "glassy" supersolid phenomena in 4He.< Leer menos

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high-T c superconductivity

charge-density-wave

filamentary superconductivity

magnetotransport

disorder

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Protected superconductivity at the boundaries of charge-density-wave domains

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