期刊
PHYSICAL REVIEW B
卷 80, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.184513
关键词
bismuth compounds; calcium compounds; Fermi level; high-temperature superconductors; phonons; photoemission; strontium compounds
资金
- Department of Energy [DE-AC02-98CH10886]
Laser-based photoemission with photons of energy 6 eV is used to examine the fine details of the very low-energy electron dispersion and associated dynamics in the nodal region of optimally doped Bi2212. A kink in the dispersion in the immediate vicinity of the Fermi energy is associated with scattering from an optical phonon previously identified in Raman studies. The identification of this phonon as the appropriate mode is confirmed by comparing the scattering rates observed experimentally with the results of calculated scattering rates based on the properties of the phonon mode.
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