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Electronic structure of cuprate superconductors in a full charge-spin recombination scheme.
- Source :
-
Physica C . Oct2015, Vol. 517, p5-15. 11p. - Publication Year :
- 2015
-
Abstract
- A long-standing unsolved problem is how a microscopic theory of superconductivity in cuprate superconductors based on the charge-spin separation can produce a large electron Fermi surface. Within the framework of the kinetic-energy driven superconducting mechanism, a full charge-spin recombination scheme is developed to fully recombine a charge carrier and a localized spin into a electron, and then is employed to study the electronic structure of cuprate superconductors in the superconducting-state. In particular, it is shown that the underlying electron Fermi surface fulfills Luttinger’s theorem, while the superconducting coherence of the low-energy quasiparticle excitations is qualitatively described by the standard d-wave Bardeen–Cooper–Schrieffer formalism. The theory also shows that the observed peak-dip-hump structure in the electron spectrum and Fermi arc behavior in the underdoped regime are mainly caused by the strong energy and momentum dependence of the electron self-energy. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09214534
- Volume :
- 517
- Database :
- Academic Search Index
- Journal :
- Physica C
- Publication Type :
- Academic Journal
- Accession number :
- 109043917
- Full Text :
- https://doi.org/10.1016/j.physc.2015.06.017