Influence of the pseudogap on the Nernst coefficient of Y0.9Ca0.1Ba2Cu3Oy

Abstract

We have studied the Nernst coefficient, v(T), of epitaxial thin films of the superconductor Y1-xCaxBa2Cu3Oy with x =0.05 and x = 0.1. The x = 0.1 sample has been measured at three different values of y, in the over- (OV), optimally- (OP), and under-doped (UD) states. As the doping level is reduced, v(T) starts to fall linearly with T at the temperature (T*) where we expect to see the influence of the pseudogap. The onset temperature of the superconducting fluctuation contribution to v(T) was found to vary slowly with the hole concentration (p) between p = 0.118 and 0.197. For the OP and UD samples, v(T>T*) is unusually large, being comparable with |S tan(Theta)| where S is the Seebeck coefficient and Theta the Hall angle.

13 pages, 4 figures

References in corpus (8)

• The Nernst effect in high-$T_c$ superconductors
• Electron pockets in the Fermi surface of hole-doped high-Tc superconductors
• Hot Spots and Pseudogaps for Hole- and Electron-Doped High-Temperature Superconductors
• Phenomenology of the normal state in-plane transport properties of high-$T_c$ cuprates
• Nernst effect and disorder in the normal state of high-T_{c} cuprates
• Anomalous pseudogap and superconducting state properties of heavily disordered Y1-xCaxBa2(Cu1-yZny)3O7-delta
• Low-temperature critical current of Y1-xCaxBa2Cu3O7-delta thin films as a function of hole content and oxygen deficiency
• Structural and electrical properties of c-axis oriented Y1-xCaxBa2(Cu1-yZny)3O7-delta thin films grown by pulsed laser deposition

Cited by in corpus (9)

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• Lifshitz critical point in the cuprate superconductor YBa2Cu3Oy from high-field Hall effect measurements
• Scaling theory of the cuprate strange metals
• Magneto-transport from momentum dissipating holography
• Nernst effect in the cuprate superconductor YBCO: Broken rotational and translational symmetries
• Hyperscaling violating black hole solutions and Magneto-thermoelectric DC conductivities in holography
• Thermal and thermoelectric transport coefficients for a two-dimensional SDW metal with weak disorder: A memory matrix calculation
• Universal limiting transition temperature for the high $T_{\mathrm{c}}$ superconductors