Some Scanning Hall Probe Movies of Vortex Dynamics in
BSCCO (2212) Single Crystals under Tilted Magnetic Fields.
(Movies prepared by Dr A N Grigorenko, A.Grigorenko@plymouth.ac.uk)
(i) Vortex Pumps
Motion for Josephson vortex stacks as Ha-b is reduced from 30Oe to 0Oe at 77K, Hz=10Oe.
Motion of Josephson vortex stacks as Ha-b is cycled from 0Oe to 55Oe and back to 0Oe at 81K.
Note how the stacks of Josephson vortices ‘vacuum up’ the pancake vortices as they move.
(ii) Melting of the Vortex Solid without and with and in-plane Magnetic Field
Melting of the vortex solid as Hz is increased from Hz=0Oe in the absence of Josephson vortices at 81K.
Note how quenched disorder leads to spatially inhomogeneous melting.
Melting of the pancake vortex solid as Hz is increased from Hz=0Oe in the presence of Josephson vortices.
(iii) Pancake Vortex Penetration along 1D Chains
Penetration of pancake vortices along Josephson vortex stacks as Hz is increased at 81K, Ha-b=35Oe.
(iv) Sublimation of 1D Vortex Chains at very high Tilt Angles
'Sublimation' and ‘crystallisation’ of 1D pancake vortex chains as Hz is cycled around Hz=0Oe at 83K,