Electronic Spectra and Their Relation to the(π,π)Collective Mode in High-TcSuperconductors

1999/06/22 by J. C. Campuzano, Hong Ding, H. Ding +22 · 17 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Iron-based superconductors research #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.83.3709

published as Phys. Rev. Lett. 83, 3709 (1999) · 4 pages (revtex), 5 figures (eps)

arxiv created 1999/06/22 · openalex publication_date 1999/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The photoemission line shape near (\ensuremathπ,0) in Bi₂Sr₂CaCu₂O_8+\ensuremathδ below T_c is characterized by a sharp peak, followed at higher energy by a dip and hump. We study the evolution of this line shape as a function of momentum, temperature, and doping. We find the hump scales with the peak and persists above T_c in the pseudogap state. We present strong evidence that the peak-dip-hump structure arises from the interaction of electrons with a collective mode of wave vector (\ensuremathπ,\ensuremathπ). The inferred mode energy and its doping dependence agree well with a magnetic resonance observed by neutron scattering.

Citations

• Theory of Underdoped Cuprates
• Pseudogaps and Their Interplay with Magnetic Excitations in the Doped 2D Hubbard Model

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