With the high-temperature superconductors a qualitatively new regime in the
phenomenology of type-II superconductivity can be accessed. The key elements governing …

In this review I discuss the application of scanning magnetic imaging to fundamental studies
of superconductors, concentrating on three scanning magnetic microscopies—scanning …

Magnetic flux can penetrate a type-II superconductor in the form of Abrikosov vortices (also
called flux lines, flux tubes, or fluxons) each carrying a quantum of magnetic flux phi 0= h/2e …

Investigations of the magnetic properties of high temperature superconductors (HTSs) have
revealed the existence of striking new vortex phenomena due, in part, to their strong …

We construct a ''phase diagram''of the vortex-solid phase of Y-Ba-Cu-O single crystals by
making a first overall connection of the shape of the magnetic hysteresis M (H, T) with the …

We present the superconducting properties of single-crystalline Ba (Fe 0.9 Co 0.1) 2 As 2 by
measuring its magnetization, resistivity, upper critical field, Hall coefficient, and magneto …

We present a systematic study of electrical resistivity, Hall coefficient, magneto-optical
imaging, magnetization, and scanning transmission electron microscopy (STEM) analyses of …

We present evidence for the crossover between creep of individual vortices and collective
creep of vortex bundles from measurements of the relaxation of the persistent currents in …

This work develops two techniques for optically probing the spatial profile of microwave
frequency superconducting currents. As an application, we measured the effects of high …

The dynamics of flux vortices in Pb films has been investigated with single fluxon resolution.
With increasing magnetic field, there is a crossover from a region where single vortex effects …