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Doping dependence of low-energy quasiparticle excitations in superconducting Bi2212

The doping-dependent evolution of the d-wave superconducting state is studied from the perspective of the angle-resolved photoemission spectra of a high-T(c) cuprate, Bi(2)Sr(2)CaCu(2) O(8+δ) (Bi2212). The anisotropic evolution of the energy gap for Bogoliubov quasiparticles is parametrized by criti...

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Detalles Bibliográficos
Autores principales: Ino, Akihiro, Anzai, Hiroaki, Arita, Masashi, Namatame, Hirofumi, Taniguchi, Masaki, Ishikado, Motoyuki, Fujita, Kazuhiro, Ishida, Shigeyuki, Uchida, Shinichi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4029726/
https://www.ncbi.nlm.nih.gov/pubmed/24314035
http://dx.doi.org/10.1186/1556-276X-8-515
Descripción
Sumario:The doping-dependent evolution of the d-wave superconducting state is studied from the perspective of the angle-resolved photoemission spectra of a high-T(c) cuprate, Bi(2)Sr(2)CaCu(2) O(8+δ) (Bi2212). The anisotropic evolution of the energy gap for Bogoliubov quasiparticles is parametrized by critical temperature and superfluid density. The renormalization of nodal quasiparticles is evaluated in terms of mass enhancement spectra. These quantities shed light on the strong coupling nature of electron pairing and the impact of forward elastic or inelastic scatterings. We suggest that the quasiparticle excitations in the superconducting cuprates are profoundly affected by doping-dependent screening.