title: Temperature-induced momentum-dependent spectral weight transfer in Bi2Sr2CaCu2O8+delta
abstract: Angle-resolved photoemission data from the cuprate superconductor Bi2Sr2CaCu2O8+delta above and below the superconducting transition temperature Tc reveal momentum-dependent changes that extend up to an energy of about 0.3 electron volt, or 40kTc (where k is the Boltzmann constant). The data suggest an anomalous transfer of spectral weight from one momentum to another, involving a sizable momentum transfer Q approximately (0.45pi, 0). The observed Q is intriguingly near the charge-order periodicity required if fluctuating charge stripes are present.
authors.affiliation: Z.-X. Shen, P. J. White, D. L. Feng, C. Kim, Department of Applied Physics, Department of Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, CA 94305, USA. G. D. Gu, School of Physics, The University of New South.
authors.initials: Z
authors.lastname: Shen
authors.initials: PJ
authors.lastname: White
authors.initials: DL
authors.lastname: Feng
authors.initials: C
authors.lastname: Kim
authors.initials: GD
authors.lastname: Gu
authors.initials: H
authors.lastname: Ikeda
authors.initials: R
authors.lastname: Yoshizaki
authors.initials: N
authors.lastname: Koshizuka