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Transport properties of high- T c superconductors: Fermi-liquid local-density electronic-structure predictions

Transport properties of high- T c superconductors: Fermi-liquid local-density... Transport properties of Ba 1 - x K x BiO 3 and Nd 2 - x Ce x CuO 4 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 Ba 1 - x K x BiO 3 the calculated Hall coefficient R H is (two times) larger than experiment and has the correct (negative) sign. For Nd 2 - x Ce x CuO 4 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 La 2 - x Sr x CuO 4 ) towards a regime in which the conventional band-theoretical description comes into better agreement with experiment. The highly anisotropic nature of the resistivity of Nd 2 - x Ce x CuO 4 is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Transport properties of high- T c superconductors: Fermi-liquid local-density electronic-structure predictions

Physical Review B , Volume 42 (10) – Oct 1, 1990
6 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1990 The American Physical Society
ISSN
1095-3795
DOI
10.1103/PhysRevB.42.6238
Publisher site
See Article on Publisher Site

Abstract

Transport properties of Ba 1 - x K x BiO 3 and Nd 2 - x Ce x CuO 4 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 Ba 1 - x K x BiO 3 the calculated Hall coefficient R H is (two times) larger than experiment and has the correct (negative) sign. For Nd 2 - x Ce x CuO 4 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 La 2 - x Sr x CuO 4 ) towards a regime in which the conventional band-theoretical description comes into better agreement with experiment. The highly anisotropic nature of the resistivity of Nd 2 - x Ce x CuO 4 is discussed.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Oct 1, 1990

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