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Correlation between incoherent phase fluctuations and disorder in Y 1 − x Pr x Ba 2 Cu 3 O 7 − δ epitaxial films from Nernst effect measurements
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Pengcheng Mandal, Soumen Budhani, R. C. Greene, Richard L. |
| Copyright Year | 2008 |
| Abstract | Measurements of Nernst effect, resistivity and Hall angle on epitaxial films of Y1−xPrxBa2Cu3O7−δ(Pr-YBCO, 0≤ x ≤0.4) are reported over a broad range of temperature and magnetic field. While the Hall and resistivity data suggest a broad pseudogap regime in accordance with earlier results, these first measurements of the Nernst effect on Pr-YBCO show a large signal above the superconducting transition temperature(Tc). This effect is attributed to vortex-like excitations in the phase incoherent condensate existing above Tc. A correlation between disorder and the width of the phase fluctuation regime has been established for the YBCO family of cuprates, which suggests a Tc ≈110K for disorder-free YBa2Cu3O7−δ. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://repository.ias.ac.in/5519/1/323.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
