Anomalous Noise in the Pseudogap Regime of YBa_2Cu_3O_7-δ

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2010-04-26

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American Physical Society

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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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D. S. Caplan et al, "Anomalous Noise in the Pseudogap Regime of YBa_2Cu_3O_7-δ," Physical Review Letters 104, no. 17 (2010), doi:10.1103/PhysRevLett.104.177001

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http://hdl.handle.net/1811/48036

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Ohio State University Research and Scholarship