Large low-frequency fluctuations in the velocity of a driven vortex lattice in a single crystal of 2H-NbSe2 superconductor.
The driven state of a well-ordered flux line lattice in a single crystal of 2H-NbSe2 in the time domain has revealed the presence of substantial fluctuations in velocity, with large and distinct time periods ( approximately seconds). A superposition of a periodic drive in the driven vortex lattice causes distinct changes in these fluctuations. We propose that prior to the onset of the peak effect there exists a heretofore unexplored regime of coherent dynamics, with unexpected behavior in velocity fluctuations.
Mohan
Shyam
S
Department of Physics, Indian Institute of Technology, Kanpur-208016, India.
Sinha
Jaivardhan
J
Banerjee
S S
SS
Sood
A K
AK
Ramakrishnan
S
S
Grover
A K
AK