Quasiparticles and Energy Scaling in Bi${}_2$Sr${}_2$Ca${}_{n-1}$Cu${}_n$O${}_{2n+4}$ ($n$=1-3): Angle-Resolved Photoemission Spectroscopy

Abstract

Angle-resolved photoemission spectroscopy (ARPES) has been performed on the single- to triple-layered Bi-family high-{\it T${}_c$} superconductors (Bi${}_2$Sr${}_2$Ca${}_{n-1}$Cu${}_n$O${}_{2n+4}$, $n$=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 {\it T${}_c$}.

4 pages, 4 figures

References in corpus (2)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Electronic structure of the trilayer cuprate superconductor Bi${}_2$Sr${}_2$Ca${}_2$Cu${}_3$O${}_{10+\delta }$

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