Transport and thermodynamic properties of cuprate superconductors: E(k) dispersion, pseudogap and isotope effects.
ORAL
Abstract
We have calculated the thermoelectric power, susceptibility and entropy of Bi-2212 and Bi-2201 using the ARPES-derived energy dispersion, a model scattering rate and including a normal-state pseudogap. The doping and temperature dependence is found to closely mimic the experimentally measured data. We have used this approach to examine isotope effects and in particular note that the kink in the dispersion near E$_{F}$ (including its isotope effect) can be probed through the high temperature thermoelectric power.
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Authors
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James Storey
MacDiarmid Institute, Victoria University
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Jeffery Tallon
MacDiarmid Institute, Industrial Research Ltd and Victoria University
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G.V.M. Williams
Industrial Research Ltd., Lower Hutt, New Zealand, MacDiarmid Institute for Advanced Materials, Industrial Research, POB 31310, Lower Hutt, New Zealand
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Suresh Narayanaswamy
MacDiarmid Institute, Industrial Research Ltd