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Study on vortex dynamics in superconducting FeSe0.5Te0.5 films under pulsed field magnetization
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DOI：10.1088/1402-4896/ae6739.png)
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Abstract
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The high upper critical field of the FeSe0.5Te0.5 superconducting film renders it suitable for pulsed field magnetization (PFM) methods. In this study, we employed the modified Ginzburg-Landau (GL) equation as the theoretical foundation. We assessed the differences in superconducting parameters between FeSe0.5Te0.5 and YBa2Cu3O7. Our investigation focused on the effects of temperature, prestrain, and the waveform of the PFM on the vortex dynamics, superconducting free energy, and order parameter values of the FeSe0.5Te0.5 film. The results indicated that under strong magnetic fields, notable differences exist in the electromagnetic behavior of FeSe0.5Te0.5 compared to YBa2Cu3O7. Temperature, prestrain, and the PFM waveform emerged as critical factors influencing vortex evolution and superconducting parameters in FeSe0.5Te0.5. This work provides substantial numerical evidence and promising insights, enhancing our understanding of vortex evolution in FeSe0.5Te0.5 under PFM.
Keywords:
FeSe0.5Te0.5 thin film
two-band Ginzburg-Landau equation
vortex dynamics
pulsed field magnetization
temperature effect
strain effect
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