1.
Phys Rev Lett
; 104(17): 177001, 2010 Apr 30.
Article
in English
| MEDLINE
| ID: mdl-20482127
ABSTRACT
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.