Anomalous magnetothermopower in the mixed state of the electron-doped high-Tc superconductors
R. C. Budhani, M. C. Sullivan, C. J. Lobb, R. L. Greene
DOI 10.1103/PhysRevB.66.052506 · Physical Review B
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Abstract
We report observation of a peak/minimum in the flux-flow thermoelectric power Sf (H) of underdoped, optimally doped, and overdoped Pr2−xCexCuO4−δ epitaxial films. This distinctive feature, seen for the first time in a high-Tc superconductor, comes from a strong vortex contribution to the total thermopower of the system. In as much as the sign of Sf (H) is directly related to the charged state of diffusing quasiparticles and vortices, our observation provides further support for a two-carrier model for charge transport in these cuprates.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 19.9 | Pressure not reported | zero_resistance |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.8 | Pressure not reported | zero_resistance |
| Pr2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | zero_resistance |
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