Kinetic Energy Driven Pairing in Cuprate Superconductors

Th A. Maier, M. Jarrell, A. Macridin, C. Slezak

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Abstract

Pairing occurs in conventional superconductors through a reduction of the electronic potential energy accompanied by an increase in kinetic energy. In the underdoped cuprates, optical experiments show that pairing is driven by a reduction of the electronic kinetic energy. Using the dynamical cluster approximation we study superconductivity in the two-dimensional Hubbard model. We find that pairing is indeed driven by the kinetic energy and that superconductivity evolves from an unconventional state with partial spin-charge separation, to a superconducting state with quasiparticle excitations.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Volume92
Issue number2
DOIs
StatePublished - 2004

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