2003•International Journal of Modern Physics BRequires access
Low Energy Excitation in Bi 2 Sr 2 Ca n-1 Cu n O 2n+4 (n = 1-3) Studied by High-Resolution Arpes
H. Matsui, T. Sato, T. Takahashi, Huanan Yang, S.-C. Wang, Hong Q. Ding, T. Fujii, Takao Watanabe, Azusa Matsuda, Takahito Terashima, Kazuo Kadowaki
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Abstract
We report systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) on Bi 2 Sr 2 Ca n-1 Cu n O 2n+4 (n = 1-3) to study the electronic structure near the Fermi level (EF) and the low energy excitation. Comprehensive ARPES data on the sudden break in the energy dispersion near EF (kink) as a function of momentum, temperature, and number of CuO 2 layers indicate that the coupling of electrons with Q = (π,π) magnetic mode is dominant in the superconducting state for multi-layered cuprates.