Transport properties of high-Tc superconductors: Fermi-liquid local-density electronic-structure predictions
N. Hamada, S. Massidda, Jaejun Yu, A. J. Freeman
DOI 10.1103/PhysRevB.42.6238 · Physical Review B
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Abstract
Transport properties of Ba1−xKxBiO3 and Nd2−xCexCuO4 are calculated by solving the Boltzmann equation using the electronic energy-band structures obtained with the local-density full-potential linearized augmented-plane-wave method. For Ba1−xKxBiO3 the calculated Hall coefficient RH is (two times) larger than experiment and has the correct (negative) sign. For Nd2−xCexCuO4 a positive Hall coefficient is obtained for the magnetic field oriented perpendicular to the Cu-O planes. This is to be compared with a negative experimental value found for x<0.18 and recent experiments that show a change of sign of this Hall coefficient (from negative to positive with increasing x) for x=0.18. These results indicate a trend (previously found for La2−xSrxCuO4) towards a regime in which the conventional band-theoretical description comes into better agreement with experiment. The highly anisotropic nature of the resistivity of Nd2−xCexCuO4 is discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxBiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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