Electronic transport in underdoped YBa2Cu3O7-delta nanowires: evidence for fluctuating domain structures |
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| Authors: | Bonetti J A Caplan D S Van Harlingen D J Weissman M B |
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| Institution: | Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. |
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| Abstract: | 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). |
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