Electronic spectra and their relation to the (pi, pi) collective mode in High-T{sub c} superconductors.
Journal Article
·
· Phys. Rev. Lett.
The photoemission line shape near ({pi},0) in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} below T{sub 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{sub 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 ({pi},{pi}). The inferred mode energy and its doping dependence agree well with a magnetic resonance observed by neutron scattering.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); FOR
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 942789
- Report Number(s):
- ANL/MSD/JA-34629; PRLTAO; TRN: US0904231
- Journal Information:
- Phys. Rev. Lett., Vol. 83, Issue 18 ; Nov. 1999; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
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