Doping and Momentum-Dependent Scattering Rate in Bi2201 Superconductor Measured By Laser-ARPES
ORAL
Abstract
We will present our high-resolution laser-based angle-resolved photoemission (ARPES) measurements on electron scattering rate in Bi2Sr2CuO6 (Bi2201) superconductors over a wide doping range. With substitution of lead (Pb) and high oxygen pressure annealing, overdoped and heavily overdoped Pb-doped Bi2201 single crystals have been prepared. Underdoped and optimally doped Bi2201 samples have been obtained by lanthanum(La) substitution and flowing oxygen annealing. Laser-based ARPES measurements with super-high energy and momentum resolutions have been carried out to study the electron scattering rate as a function of momentum and temperature for Bi2201 over a wide range of doping levels. The implication of these results on understanding the anomalous normal state properties of the high temperature cuprate superconductors will be discussed.
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Presenters
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Ying Ding
- Institute of Physics, Chinese Academy of Sciences
- Chnese Academy of Sciences(CAS)
- Chinese Academy of Scienes (CAS)