Doping dependence of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8+ delta ) in the normal state

Doping dependence of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8+ delta ) in the normal state

We have probed the electronic structure of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8+ delta ) with angle-resolved photoemission spectroscopy, observing changes in the electronic structure with doping variation. At carrier dopings below the optimal for superconductivity, we observe an excitation gap in th...

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Bibliographic Details
Published in:Physica. C, Superconductivity Vol. 263; no. 1-4; pp. 208 - 213
Main Authors: Loeser, A G, Dessau, D S, Shen, Z-X
Format: Journal Article
Language:English
Published: 01-01-1996
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Summary:We have probed the electronic structure of Bi sub(2)Sr sub(2)CaCu sub(2)O sub(8+ delta ) with angle-resolved photoemission spectroscopy, observing changes in the electronic structure with doping variation. At carrier dopings below the optimal for superconductivity, we observe an excitation gap in the normal state. The momentum dependence and the magnitude of the gap are very similar to those of the d sub(x(2)-y(2)) gap observed in the superconducting state.
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ISSN:0921-4534