Quasiparticles and Energy Scaling in Bi2Sr2Can-1CunO2n+4 (n=1-3): Angle-Resolved Photoemission Spectroscopy
T. Sato, H. Matsui, S. Nishina, T. Takahashi, T. Fujii, T. Watanabe, A. Matsuda
Abstract
Angle-resolved photoemission spectroscopy (ARPES) has been performed on the single- to triple-layered Bi-family high- Tc superconductors (Bi2Sr2Can-1CunO2n+4, n=1-3). We found a sharp quasiparticle peak as well as a pseudogap at the Fermi level in the triple-layered compound. Comparison among three compounds has revealed a universal rule that the characteristic energies of superconducting and pseudogap behaviors are scaled with the maximum Tc.
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