Competition of superconductivity and antiferromagnetism in a d-wave vortex lattice

Amit Ghosal; Catherine Kallin; A. John Berlinsky

doi:10.1103/PhysRevB.66.214502

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Competition of superconductivity and antiferromagnetism in a d-wave vortex lattice

Amit Ghosal, Catherine Kallin, A. John Berlinsky

DOI 10.1103/PhysRevB.66.214502 · Physical Review B

T1

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Abstract

The d-wave vortex lattice state is studied within the framework of Bogoliubov–de Gennes mean field theory. We allow antiferromagnetic (AFM) order to develop self-consistently along with d-wave singlet superconducting (dSC) order in response to an external magnetic field that generates vortices. The resulting AFM order has strong peaks at the vortex centers, and changes sign, creating domain walls along lines where ∇×js≈0. The length scale for decay of this AFM order is found to be much larger than the bare d-wave coherence length, ξ. Coexistence of dSC and AFM order in this system is shown to induce π-triplet superconducting order. Competition between different orders is found to suppress the local density of states at the vortex center and comparison to recent experimental findings is discussed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown