The superconducting quasiparticle predicted by BCS theory is investigated in a triple-layered high-Tc cuprate Bi2Sr 2Ca2Cu3O10+δ, by angle-resolved photoemission spectroscopy (ARPES). We have succeeded in observing the quasiparticle dispersion below and above the Fermi level, and performed a quantitative analysis based on BCS theory. The excellent agreement in the energy dispersion and the coherence factors between the ARPES experiment and BCS theory indicates the basic validity of BCS formalism in describing the superconducting state of cuprates.
|Number of pages||2|
|Journal||Physica C: Superconductivity and its Applications|
|Publication status||Published - 2004 Aug|
|Event||Proceedings of the International Conference on Materials - Rio de Janeiro, Brazil|
Duration: 2003 May 25 → 2003 May 30
- BCS theory