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

J. C. Campuzano, H. Ding, M. R. Norman, H. M. Fretwell, M. Randeria, A. Kaminski, J. Mesot, T. Takeuchi, T. Sato, T. Yokoya, T. Takahashi, T. Mochiku, K. Kadowaki, P. Guptasarma, D. G. Hinks, Z. Konstantinovic, Z. Z. Li, and H. Raffy
Phys. Rev. Lett. 83, 3709 – Published 1 November 1999
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Abstract

The photoemission line shape near (π,0) in Bi2Sr2CaCu2O8+δ below Tc 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 Tc 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 (π,π). The inferred mode energy and its doping dependence agree well with a magnetic resonance observed by neutron scattering.

  • Received 22 June 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.3709

©1999 American Physical Society

Authors & Affiliations

J. C. Campuzano1,2, H. Ding3, M. R. Norman2, H. M. Fretwell1, M. Randeria4, A. Kaminski1, J. Mesot2, T. Takeuchi5, T. Sato6, T. Yokoya6, T. Takahashi6, T. Mochiku7, K. Kadowaki8, P. Guptasarma2, D. G. Hinks2, Z. Konstantinovic9, Z. Z. Li9, and H. Raffy9

  • 1Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607
  • 2Materials Sciences Division, Argonne National Laboratory, Argonne, Illinois 60439
  • 3Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467
  • 4Tata Institute of Fundamental Research, Mumbai 400005, India
  • 5Department of Crystalline Materials Science, Nagoya University, Nagoya 464-01, Japan
  • 6Department of Physics, Tohoku University, 980-8578 Sendai, Japan
  • 7National Research Institute for Metals, Sengen, Tsukuba, Ibaraki 305, Japan
  • 8Institute of Materials Science, University of Tsukuba, Ibaraki 305, Japan
  • 9Laboratoire de Physique des Solides, Universite de Paris-Sud, 91405 Orsay Cedex, France

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Vol. 83, Iss. 18 — 1 November 1999

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