Journal
PHYSICAL REVIEW B
Volume 72, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.72.024533
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The energy-momentum (epsilon-k) dispersion and the shape of the Fermi surface in the (Bi,Pb)(2)(Sr,La)(2)CuO6+delta (Bi2201) superconductors with various hole concentrations were determined by the high resolution angle-resolved photoemission spectroscopy. On the basis of the epsilon-k dispersion thus obtained, temperature and hole-concentration dependence of the thermoelectric power S(T) was calculated within the framework of the Boltzmann transport theory. S(T) of the optimally and overdoped samples was quantitatively reproduced by the present calculation, strongly indicating that characteristics in S(T) of the high-T-c cuprates under the optimally to overdoped conditions is unambiguously caused by the band structure characterized by the van Hove singularity near the Fermi level.
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