Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements

Soumyajit Mandal; Somak Basistha; John Jesudasan; Vivas Bagwe; Pratap Raychaudhuri

doi:10.1088/1361-6668/aca62c

Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements

Superconductivity 2022-12-08 v1

Authors: Soumyajit Mandal , Somak Basistha , John Jesudasan , Vivas Bagwe , Pratap Raychaudhuri

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Abstract

We extract the vortex lattice parameters using low-frequency two-coil mutual inductance measurements in a 20-nm-thick superconducting a-MoGe thin film. We fit the temperature dependence of ac penetration depth in the mixed state using a model developed by Coffey and Clem and demonstrate a procedure for extracting vortex lattice parameters such as pinning constant, vortex lattice drag coefficient, and pinning potential barrier. We show that the extracted parameters follow the magnetic field variation expected for a weakly pinned 2-dimensional vortex lattice.

Keywords

vortex dynamics mutual inductance a-moge thin film coffey-clem model pinning parameters mixed state

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@article{arxiv.2211.04276,
  title  = {Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements},
  author = {Soumyajit Mandal and Somak Basistha and John Jesudasan and Vivas Bagwe and Pratap Raychaudhuri},
  journal= {arXiv preprint arXiv:2211.04276},
  year   = {2022}
}

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21 pages, 6 figures

Study of vortex dynamics in an a-MoGe thin film using low-frequency two-coil mutual inductance measurements

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