Electronic excitations near the Brillouin zone boundary of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Bi</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Sr</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">CaCu</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>8</mn><mo>+</mo><mi>δ</mi></mrow></msub></mrow></math></span>

D. L. Feng; C. Kim; H. Eisaki; D. H. Lu; A. Damascelli; K. M. Shen; F. Ronning; N. P. Armitage; N. Kaneko; M. Greven; J.-i. Shimoyama; K. Kishio; R. Yoshizaki; G. D. Gu; Z.-X. Shen

doi:10.1103/PhysRevB.65.220501

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Electronic excitations near the Brillouin zone boundary of ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8 + δ}$

D. L. Feng, C. Kim, H. Eisaki, D. H. Lu, A. Damascelli, K. M. Shen, F. Ronning, N. P. Armitage, N. Kaneko, M. Greven, J.-i. Shimoyama, K. Kishio, R. Yoshizaki, G. D. Gu, and Z.-X. Shen

Phys. Rev. B 65, 220501(R) – Published 22 May 2002

Abstract

Based on angle resolved photoemission spectra measured on different systems at different dopings, momenta, and photon energies, we show that the anomalously large spectral linewidth in the $(π, 0)$ region of optimal doped and underdoped ${Bi}_{2} {Sr}_{2} {CaCu}_{2} O_{8 + δ}$ has significant contributions from the bilayer band splitting, and that the scattering rate in this region is considerably smaller than previously estimated. This picture of the electronic excitation near $(π, 0)$ puts additional experimental constraints on various microscopic theories and data analyses.

Received 3 April 2002

DOI:https://doi.org/10.1103/PhysRevB.65.220501

Authors & Affiliations

D. L. Feng^1,2,*, C. Kim¹, H. Eisaki¹, D. H. Lu¹, A. Damascelli¹, K. M. Shen¹, F. Ronning¹, N. P. Armitage¹, N. Kaneko¹, M. Greven¹, J.-i. Shimoyama³, K. Kishio³, R. Yoshizaki⁴, G. D. Gu⁵, and Z.-X. Shen¹

¹Department of Physics, Applied Physics and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305
²Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China
³Department of Applied Chemistry, University of Tokyo, Tokyo 113-8656, Japan
⁴Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
⁵Physics Department, Brookhaven National Laboratory, P. O. Box 5000, Upton, New York 11973

^*Present address: Dept. of Physics and Astronomy, The Univ. of British Columbia, Vancouver, B.C., Canada, V6T 1Z1. Email address: dlfeng@physics.ubc.ca

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Vol. 65, Iss. 22 — 1 June 2002

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