Journal
PHYSICAL REVIEW LETTERS
Volume 87, Issue 25, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.87.257003
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Within the phase fluctuation model for the pseudogap state of cuprate superconductors we identify a novel statistical Berry phase interaction between the nodal quasiparticles and fluctuating vortex-antivortex excitations. The effective action describing this model assumes the form of an anisotropic Euclidean quantum electrodynamics in (2 + 1) dimensions (QED(3)) and naturally generates non-Fermi liquid behavior for its fermionic excitations. The doping axis in the x-T phase diagram emerges as a quantum critical line which regulates the low energy fermiology.
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