Mesoscopic conductance fluctuations in high-T-c grain boundary Josephson junctions: Coherent quasiparticle transport
Artikel i vetenskaplig tidskrift, 2007
Magneto-fluctuations of the normal resistance RN have been reproducibly observed in YBa2Cu3O7-delta (HTS) biepitaxial grain boundary junctions at low temperatures. We attribute them to mesoscopic transport in narrow channels across the grain boundary line. 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. (c) 2007 Elsevier B.V. All rights reserved.
Författare
F. Tafuri
Università degli Studi della Campania Luigi Vanvitelli
Universita degli Studi di Napoli Federico II
A. Tagliacozzo
Universita degli Studi di Napoli Federico II
D. Born
Universita degli Studi di Napoli Federico II
D. Stornaiuolo
Universita degli Studi di Napoli Federico II
E. Gambale
Università degli Studi della Campania Luigi Vanvitelli
D. Dalena
Università degli Studi della Campania Luigi Vanvitelli
Floriana Lombardi
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Physica C: Superconductivity and its Applications
0921-4534 (ISSN)
Vol. 460-462 Part 1 343-346Ämneskategorier
Fysik
DOI
10.1016/j.physc.2007.03.024