Fermi surface and superconducting gap of triple-layered Bi2Sr2Ca2Cu3O10+d

Details Fermi surface and superconducting gap of triple-layered Bi2Sr2Ca2Cu3O10+d Fermi surface and superconducting gap of triple-layered Bi2Sr2Ca2Cu3O10+d

2001-10-24

arxiv.org/abs/cond-mat/0110523v1

J. Superconductivity 15, 147 (2002)

Physics

Condensed Matter

Superconductivity

8 pages, 2 figure

Scientific paper

We present a comprehensive study performed with high-resolution angle-resolved photoemission spectroscopy on triple-layered Bi2Sr2Ca2Cu3O10+d single crystals. By measurements above TC the Fermi surface topology defined by the Fermi level crossings of the CuO2-derived band was determined. A hole-like Fermi surface as for single and double-CuO2 layered Bi-based cuprates is found, giving new input to the current debate of the general Fermi surface topology of the high Tc superconductors. Furthermore, we present measurements of the superconducting gap of Bi-2223 and show that there are clear indications for a strong anisotropy of the superconducting gap. The universal properties of this phase in comparison to the other Bi-based cuprates will be discussed.

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