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Updated: Jul 16, 2026
06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Instabilities in the vortex matter and the peak effect phenomenon.
Shyam Mohan1, Jaivardhan Sinha, S S Banerjee
1Department of Physics, Indian Institute of Technology, Kanpur-208016, Uttar Pradesh, India.
Physical Review Letters
|March 16, 2007
Summary
We discovered a new vortex pinning crossover in 2H-NbSe2 single crystals, unrelated to the peak effect. This crossover is linked to unusual magnetization behavior and helps map the vortex matter phase diagram.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Vortex matter in superconductors exhibits complex phase diagrams.
- Pinning phenomena significantly influence superconducting properties.
Purpose of the Study:
- To identify and characterize a novel vortex pinning crossover in 2H-NbSe2 single crystals.
- To investigate the relationship between this crossover, magnetization response, and the vortex matter phase diagram.
Main Methods:
- Experimental investigation of 2H-NbSe2 single crystals.
- Magnetic measurements in varying dc magnetic fields (Bdc) and temperatures (T).
- Analysis of vortex matter phase diagram and pinning regimes.
Main Results:
- Identification of a crossover from weak to strong vortex pinning, independent of the peak effect.
- Observation of anomalous history-dependent magnetization associated with this crossover.
- Delineation of pinning crossover boundaries and a thermal fluctuation regime.
Conclusions:
- The identified crossover provides new insights into vortex dynamics in 2H-NbSe2.
- History-dependent magnetization is a key indicator of this pinning transition.
- The study refines the understanding of the vortex matter phase diagram for this material.
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