Doping dependence of the electron–phonon and electron–spin fluctuation interactions in the high-Tc superconductor Bi2Sr2CaCu2O8+δ

• Main Authors: Springer, D., Nair, S. K., Zou, X. Q., Cheong, S. A., Panagopoulos, C., Tamegai, T., Eisaki, H., Ishida, S., Uchida, S., Taylor, A. J., Zhu, J. -X., Chia, Elbert E. M.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Physics::Optics and light
• Online Access: https://hdl.handle.net/10356/101503; http://hdl.handle.net/10220/24171
• Institution: Nanyang Technological University

Using ultrafast optical techniques, we detect two types of bosons strongly coupled to electrons in the family of Bi2Sr2CaCu2O8+ (Bi-2212) from the underdoped to overdoped regimes. The different doping dependences of the electron–boson coupling strengths enable us to identify them as phonons and sp...