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

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

2010-04-30

arxiv.org/abs/1004.5554v1

Phys. Rev. Lett. 104, 177001 (2010)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

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.

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