bright iambs at the use of energy a professor in the department of physics of
the indian institute of technology con for these are my collaborators mister work we show
admissible with someone that might be these students and prosody achieved among right from the
university of tokyo
the relatively low density ordered vortex so that a sensible conduct that smells into a
higher density disordered vortex liquid phase under the influence of an ensemble fluctuations
shown below is a schematic representation of the behavior of the sheer elastic more like
of the vortex like that of the function of increasing magnetic
what x melting is the expected whenever the vortex lattices are namely when the elastic
more like is low at low and high magnetic at low magnetic field theoretically a
transformation from the vortex liquid two solid phase is expected you to the and hunting
stiffness of the lattice due to increasing in the vortex interactions with increasing magnetic field
in the present study we have investigated the nature of the low we walked experience
i feel mending is an already well studied phenomena
using the high sensitivity magnet optical imaging setup a lot the tidy contour we measure
the local magnetic field distribution inside this upon the though
shown here is a schematic of the local field distribution of process above conducted you
but the presence of what this is the
the local magnetic field is proportional to the density of porpoises in this apartment
we measure the local magnetic field distribution inside the material by measuring the intensity of
the parity rotated linearly polarised light
you know what experiment we have attempted to measure the changes in the vortex tensity
you to face transformations in the vortex state at low magnetic
these are differential magnet optical images captured at fifty calibre in which represent the changes
in the local magnetic field produced in response to the next on a field modulation
of one gauss which is applied at each of the measuring applied magnetic
nor the bright white regions in these images corresponds to what actually with bottles where
there is a comparatively larger change in the local magnetic field or vortex tensity
our initial investigations show an initial low field vortex liquid phase which sustains larger changes
in the vortex tensity settling down into a vortex solid phase at heart magnetic field
with sustained smaller changes in the vortex tensity furthermore
new creation of the vortex solid phase is characterized by the disappearance of shielding cartons
within the vortex solid regions ad is noted with then circled region and also with
the saddle
based on such studies we have identified the vortex liquid the solid melting line experimentally
this experimentally determined based on the shen boundary is also matching well with the theoretically
predicted melting line at low magnetic field in be infeasible conductors
around this mending phrase boundary we have also identified a le de marco existence but
the vortex solid and liquid phases coexist
using our magnet optical imaging technique we spatially it is all the information on relaxation
of them in a magnet isolation at different locations in the sample which we used
to reduce the pinning landscape across the sample
the variation in pinning across different regions of the sample are represented by the coloured
bar the present beside the coloured image of the sample
we find that the location of the low in vortex liquid the solid based on
that and boundary shifts but radiation in training
which is well described by the effectively in the men but increasing with the pinning
strand thank you