Electronic Structures of Sr14-xCaxCu24O41
M. Arai, T. Tsunetsugu
Abstract
The electronic structures of Sr14-xCaxCu24O41 are calculated within the local density approximation. Around the Fermi energy there exist quasi-one-dimensional bands originated from the ladder and chain layers. The nearest-neighbor inter-ladder hoppings are estimated to be 5--20% of the intra-ladder ones. Possible effects of Ca substitution on electronic structures and charge distribution are also discussed.
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