Coherent quasiparticle transport in grain boundary junctions employing high-Tc superconductorsReport as inadecuate




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1 Dip. Ingegneria dell-Informazione 2 Dip. Scienze Fisiche 3 GES - Groupe d-étude des semiconducteurs 4 Dept. Microelectronics and Nanoscience 5 Physics Dept.

Abstract : Magneto-fluctuations of the normal resistance RN have been reproducibly observed in YBa2Cu3O7-d biepitaxial grain boundary junctions at low temperatures. We attribute them to mesoscopic transport in narrow channels across the grain boundary line, occurring in an unusual energy regime. The Thouless energy appears to be the relevant energy scale. Possible implications on the understanding of coherent transport of quasiparticles in HTS and of the dissipation mechanisms are discussed.

Keywords : mesoscopic physics nanodevices high critical temperature superconductors





Author: F. Tafuri - A. Tagliacozzo - D. Born - D. Stornaiuolo - E. Gambale - D. Dalena - P. Lucignano - B. Jouault - F. Lombardi - A. Bar

Source: https://hal.archives-ouvertes.fr/



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