Coexistence of bulk antiferromagnetic order and superconductivity in the QED3 theory of copper oxides
T. Pereg-Barnea, M. Franz
DOI 10.1103/PhysRevB.67.060503 · Physical Review B
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Abstract
Within the framework of the QED3 theory of cuprate superconductivity it is argued that bulk antiferromagnetic (AF) order can coexist with d-wave superconductivity in the underdoped region, in agreement with recent experiments. The AF order arises from the phase fluctuating d-wave superconductor via the mechanism of spontaneous chiral-symmetry breaking, provided that fluctuations are sufficiently strong. The phase diagram for this coexistence is mapped out by means of analytical and numerical solutions of the underlying Dyson-Schwinger equation in the large N limit.
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