Real-time observation of vortex lattices in a superconductor by electron microscopy

Article Abstract:

Lorentz microscopy provides a means of studying the changes in vortex lattices that are an intriguing property of type II superconductors. Lorentz microscopy is a form of electron microscopy in which two electron beams are reflected in different directions through neighboring domains.; A 300-kV Lorentz microscope yielded real-time micrographs that are far more informative than the static images produced by other micrographic techniques.

Usage, Electron microscopy

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Motion of vortices in superconductors

Article Abstract:

Real time observations were made of the onset of vortex motion in high temperature superconductors, to study the mechanism of vortex pinning. Vortices were created in a Bi-2212 thin film by cleaving a single Bi(sub2)Sr(sub2)CaCU(sub2)O(sub8+delta) crystal. The magnetic field was applied above the critical temperature, and alteration of the magnetic field moved the vortices.

Vortex-motion, Vortex motion, Magnetic fields

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Observations of individual vortices trapped along columnar defects in high-temperature superconductors

Article Abstract:

Research on superconductors at high temperature is examined in detail, with a focus on their magnetic fields and the behavior of individual vortices.

Magnetism, Superconducting magnets

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