Vortex structures in model p-wave superconducting Sr2RuO4: Single two-dimensional band vs quasi-one-dimensional bands

Jia-Wei Huo; Fu-Chun Zhang

doi:10.1103/PhysRevB.87.134501

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Vortex structures in model p-wave superconducting Sr2RuO4: Single two-dimensional band vs quasi-one-dimensional bands

Jia-Wei Huo, Fu-Chun Zhang

DOI 10.1103/PhysRevB.87.134501 · Physical Review B

T1

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Abstract

There has been an interesting debate on the primary source of chiral p-wave superconductivity in Sr2RuO4. We present a comparative study on the vortex structure between a single two-dimensional (2D) band and quasi-1D band model by using the Bogoliubov-de Gennes theory. The pattern of the local density of states at zero bias around a vortex core has a diamond shape in the quasi-1D model and is much more isotropic in the 2D model. The spin-lattice relaxation rate well below the superconducting transition temperature is greatly enhanced in the vortex state in the 2D model, but not in the quasi-1D model. These features can be tested by using a scanning tunneling microscope and nuclear magnetic resonance or nuclear quadrupole resonance to distinguish the models for the superconductivity in Sr2RuO4.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.5	Pressure not reported	unknown