Laser-ARPES Study on Superconducting gap, Pseudogap and Quasiparticle scattering rate of Bi2201 Superconductors
ORAL
Abstract
The nature of the anomalou normal state properties has been a long-standing puzzle in high temperature cuprate superconductors. Here we will present our laser-based angle-resolved photoemission spectroscopy (ARPES) results on underdoped and optimallydoped Bi2(Sr,La)2CuO6 Bi2201) superconductor. Taking advantage of the high resolution of Laser-ARPES, we have carried out systematic investigation on the superconducting gap, pseudogap, and scattering rate as a function of momentum and temperature for La-Bi2201 for Bi2201 samples with different doping levels. The implications of these results on the understanding of the normalstate will be discussed
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