Trapped flux in a small crystal of CaKFe$_4$As$_4$ at ambient pressure and in a diamond anvil pressure cell

Sergey L. Bud'ko; Shuyuan Huyan; Mingyu Xu; Paul C. Canfield

doi:10.1088/1361-6668/ad45c7

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arXiv · 2405.08189

Trapped flux in a small crystal of CaKFe$_4$As$_4$ at ambient pressure and in a diamond anvil pressure cell

Sergey L. Bud'ko·Shuyuan Huyan·Mingyu Xu·Paul C. Canfield

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Abstract

In an extension of our previous work, [Sergey L Bud'ko et al 2023 Supercond. Sci. Technol. 36 115001] the measurements of temperature dependent magnetization associated with trapped magnetic flux in a small single crystal of CaKFe$_4$As$_4$, using zero-field-cooled and field-cooled protocols were performed, on the same crystal, at ambient pressure without a pressure cell and at 2.2 GPa in a commercial diamond anvil cell (DAC), showing comparable results. The data show that with a proper care and understanding, trapped flux measurements in superconductors indeed can be performed on samples in DACs under pressure, as was done on superhydrides [V S Minkov et al 2023 Nat. Phys. 19 1293].

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Sergey L. Bud'ko, Shuyuan Huyan, Mingyu Xu, Paul C. Canfield. 2024-05-13. Trapped flux in a small crystal of CaKFe$_4$As$_4$ at ambient pressure and in a diamond anvil pressure cell. https://doi.org/10.1088/1361-6668%2Fad45c7

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