arXiv subjects

D. S. Caplan

Publications and source records attributed to D. S. Caplan.

2 recordsLinked to original sources

arXiv2010

Anomalous Noise in the Pseudogap Regime of YBa$_2$Cu$_3$O$_{7-δ}$

An unusual noise component is found near and below about 250 K in the normal state of underdoped YBCO and Ca-YBCO films. This noise regime, unlike the more typical noise above 250 K, has features expected for a symmetry-breaking collective electronic state. These include large individual fluctuators, a magnetic sensitivity, and aging effects. A possible interpretation in terms of fluctuating charge nematic order is presented.

cond-mat.supr-con↗

arXiv2004

Electronic Transport in Underdoped YBCO Nanowires: Possible Observation of Stripe Domains

We have measured the transport properties of a series of underdoped YBa2Cu3O7 nanowires fabricated with widths of 100-250 nm. We observe large telegraph-like 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 such as that created by charge stripes. We also find anomalous hysteretic steps in the current-voltage characteristics well below Tc.

cond-mat.supr-con↗