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Evidence for pairing above Tc from the dispersion in the pseudogap phase of cuprates
- Source :
- Phys. Rev. Lett 101, 137002 (2008)
- Publication Year :
- 2008
-
Abstract
- In the underdoped high temperature superconductors, instead of a complete Fermi surface above Tc, 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 hard to reconcile with a competing order parameter, but is consistent with pairing without condensation.
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett 101, 137002 (2008)
- Publication Type :
- Report
- Accession number :
- edsarx.0803.3052
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.101.137002