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 (MC2), Kvantkomponentfysik

Physica C: Superconductivity and its Applications

0921-4534 (ISSN)

Vol. 460-462 Part 1 343-346

Ämneskategorier

Fysik

DOI

10.1016/j.physc.2007.03.024