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Nanomechanics of an individual vortex in an anisotropic type-II superconductor

E. H. Brandt, G. P. Mikitik, E. Zeldov

DOI 10.1103/PhysRevB.80.054513 · Physical Review B

T1

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Abstract

As shown in recent experiments [Auslaender et al., Nat. Phys. 5, 35 (2009)] magnetic force microscopy permits one not only to image but also to manipulate an individual vortex in type-II superconductors, and this manipulation provides a new powerful tool to study vortex dynamics and pinning. We derive equations that describe the deformation of an individual vortex in an anisotropic biaxial type-II superconductor under the action of the microscope’s magnetic tip. These equations take into account the driving force generated by the tip, the elastic force caused by the vortex deformation, and the pinning force exerted by point defects. Using these equations, we reproduce the main features of the experimental data obtained by Auslaender et al.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
YBa2Cu3O6.991

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—Pressure not reportedunknown
YBa2Cu3O6.99

Archive — visibility unverified

Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

—Pressure not reportedunknown

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