Electronic Transport in Underdoped YBa2Cu3O7δ Nanowires: Evidence for Fluctuating Domain Structures

J. A. Bonetti, D. S. Caplan, D. J. Van Harlingen, and M. B. Weissman
Phys. Rev. Lett. 93, 087002 – Published 17 August 2004

Abstract

We have measured the transport properties of a series of underdoped YBa2Cu3O7δ nanowires fabricated with widths of 100–250 nm. We observe large telegraphlike fluctuations in the resistance between the pseudogap temperature T* and the superconducting transition temperature Tc, consistent with the formation and dynamics of a domain structure. We also find anomalous hysteretic steps in the current-voltage characteristics well below Tc.

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  • Received 6 March 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.087002

©2004 American Physical Society

Authors & Affiliations

J. A. Bonetti*, D. S. Caplan, D. J. Van Harlingen, and M. B. Weissman

  • Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA

  • *Present address: Department of Physics, California Institute of Technology, Pasadena, CA 91125

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Vol. 93, Iss. 8 — 20 August 2004

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