Evidence for Pairing above the Transition Temperature of Cuprate Superconductors from the Electronic Dispersion in the Pseudogap Phase
Creators:
Kanigel, A.Chatterjee, U.
Randeria, M.
Norman, M. R.
Koren, G.
Kadowaki, K.
Campuzano, J. C.
Issue Date:
2008-09-26Metadata
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American Physical SocietyCitation:
A. Kanigel et al, "Evidence for Pairing above the Transition Temperature of Cuprate Superconductors from the Electronic Dispersion in the Pseudogap Phase," Physical Review Letters 101, no. 13 (2008), doi:10.1103/PhysRevLett.101.137002Abstract:
In the underdoped high temperature superconductors, instead of a complete Fermi surface above T_c, only disconnected Fermi arcs appear, separated by regions that still exhibit an energy gap. We show that in this pseudogap phase, the energy-momentum relation of electronic excitations near E_F behaves like the dispersion of a normal metal on the Fermi arcs, but like that of a superconductor in the gapped regions. We argue that this dichotomy in the dispersion is difficult to reconcile with a competing order parameter, but is consistent with pairing without condensation.
Type:
ArticleISSN:
1079-7114Rights:
©2008 The American Physical SocietyCollections
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