Nondispersive Fermi Arcs and the Absence of Charge Ordering in the Pseudogap Phase of Bi_2Sr_2CaCu_2O_8+δ
Fretwell, H. M.
Li, Z. Z.
Norman, M. R.
Campuzano, J. C.
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Publisher:American Physical Society
Citation:U. Chatterjee et al, "Nondispersive Fermi Arcs and the Absence of Charge Ordering in the Pseudogap Phase of Bi_2Sr_2CaCu_2O_8+δ," Physical Review Letters 96, no. 10 (2006), doi:10.1103/PhysRevLett.96.107006
The autocorrelation of angle resolved photoemission data from the high temperature superconductor Bi_2Sr_2CaCu_2O_8+δ shows distinct peaks in momentum space which disperse with binding energy in the superconducting state, but not in the pseudogap phase. Although it is tempting to attribute a nondispersive behavior in momentum space to charge ordering, a deconstruction of the autocorrelation reveals that the nondispersive peaks arise from the tips of the Fermi arcs, which themselves do not change with binding energy.