Electronic transport in underdoped YBa2Cu3O7-δ nanowires: Evidence for fluctuating domain structures

We have measured the transport properties of a series of underdoped YBa(2)Cu(3)O(7-delta) 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 T(c), consistent...

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Veröffentlicht in:	Physical review letters 2004-08, Vol.93 (8), p.087002.1-087002.4
Hauptverfasser:	BONETTI, J. A, CAPLAN, D. S, VAN HARLINGEN, D. J, WEISSMAN, M. B
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Mesoscopic and nanoscale systems Physics Superconducting films and low-dimensional structures Superconductivity
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Zusammenfassung:	We have measured the transport properties of a series of underdoped YBa(2)Cu(3)O(7-delta) 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 T(c), consistent with the formation and dynamics of a domain structure. We also find anomalous hysteretic steps in the current-voltage characteristics well below T(c).
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.93.087002