Presentation Information
[PC6-01]Peak effect of vortex dynamics in a superconductor with columnar defect: A molecular dynamics simulation study
*Naoto Yamashita1, Masaru Kato1 (1. Dept. of Phys. and Electronics, Osaka Metropolitan Univ. (Japan))
Keywords:
Vortex,Molecular dynamics,Peak effect,Critical current,Vortex pinning
[Purpose]
We study the peak effect mechanism of vortex dynamics.
[Method]
We use extended three-dimensional molecular dynamics(3DMD) with three-dimensional pinning.[1]
[Results]
We confirm that vortex pinning state causing high critical current depends on the interaction distance and vortex number, not necessarilyon the strength of pinning.
[Consideration]
“Normal” peak effect in a dirty superconductor may come from crossover between individual pinning and collective pinning.
[Conclusion]
Our results may support the individual vs collective pinning theory.
[1] N. Yamashita and M. Kato 2025 J. Phys.: Conf. Ser. 3054 012007(2025)
We study the peak effect mechanism of vortex dynamics.
[Method]
We use extended three-dimensional molecular dynamics(3DMD) with three-dimensional pinning.[1]
[Results]
We confirm that vortex pinning state causing high critical current depends on the interaction distance and vortex number, not necessarilyon the strength of pinning.
[Consideration]
“Normal” peak effect in a dirty superconductor may come from crossover between individual pinning and collective pinning.
[Conclusion]
Our results may support the individual vs collective pinning theory.
[1] N. Yamashita and M. Kato 2025 J. Phys.: Conf. Ser. 3054 012007(2025)