Coexistence of bulk antiferromagnetic order and superconductivity in the QED 3 theory of copper oxides
2003; American Physical Society; Volume: 67; Issue: 6 Linguagem: Inglês
10.1103/physrevb.67.060503
ISSN1095-3795
AutoresT. Pereg-Barnea, Marcel Franz,
Tópico(s)Theoretical and Computational Physics
ResumoWithin the framework of the QED3 theory of cuprates 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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