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arXiv · 2302.09337

Revealing intrinsic vortex-core states in Fe-based superconductors through machine-learning-driven discovery

Yueming Guo·Hu Miao·Qiang Zou·Mingming Fu·Athena S. Sefat·Andrew R. Lupini·Sergei V. Kalinin·Zheng Gai
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Abstract

Electronic states within superconducting vortices hold crucial information about paring mechanisms and topology. While scanning tunneling microscopy/spectroscopy(STM/S) can image the vortices, it is difficult to isolate the intrinsic electronic states from extrinsic effects like subsurface defects and disorders. We combine STM/S with unsupervised machine learning to develop a method for screening out the vortices pinned by embedded disorder in Fe-based superconductors. The approach provides an unbiased way to reveal intrinsic vortex-core states and may address puzzles on Majorana zero modes.

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Yueming Guo, Hu Miao, Qiang Zou, Mingming Fu, Athena S. Sefat, Andrew R. Lupini, Sergei V. Kalinin, Zheng Gai. 2023-02-18. Revealing intrinsic vortex-core states in Fe-based superconductors through machine-learning-driven discovery. https://arxiv.org/abs/2302.09337

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