Abstract
We have measured the transport properties of a series of underdoped nanowires fabricated with widths of 100–250 nm. We observe large telegraphlike fluctuations in the resistance between the pseudogap temperature and the superconducting transition temperature , consistent with the formation and dynamics of a domain structure. We also find anomalous hysteretic steps in the current-voltage characteristics well below .
- Received 6 March 2004
DOI:https://doi.org/10.1103/PhysRevLett.93.087002
©2004 American Physical Society