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Volumn 89, Issue 20, 2014, Pages

Excitonic and superconducting orders from repulsive interaction on the doped honeycomb bilayer

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EID: 84901458045     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.89.205119     Document Type: Article
Times cited : (30)

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    • We note that the symmetry-allowed term (Equation presented)(Equation presented) is also present in general, where (Equation presented) is the (Equation presented) order parameter. Naively, the presence of such a term in the free energy would imply that (Equation presented)-wave superconductivity is immediately induced once one of the (Equation presented)-wave components becomes nonzero. However, closer inspection reveals that this term vanishes in the case of chiral (Equation presented)-wave superconductivity, where (Equation presented), so that (Equation presented)-wave superconductivity is not induced at (Equation presented).
    • We note that the symmetry-allowed term (Equation presented)(Equation presented) is also present in general, where (Equation presented) is the (Equation presented) order parameter. Naively, the presence of such a term in the free energy would imply that (Equation presented)-wave superconductivity is immediately induced once one of the (Equation presented)-wave components becomes nonzero. However, closer inspection reveals that this term vanishes in the case of chiral (Equation presented)-wave superconductivity, where (Equation presented), so that (Equation presented)-wave superconductivity is not induced at (Equation presented).
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