Surface superconducting states in a polycrystalline MgB$_{2}$ sample
Menachem I. Tsindlekht, Grigory I. Leviev, Valery M. Genkin, Israel, Felner, Pavlo Mikheenko, and J. Stuart Abell
TL;DR
This study provides experimental evidence for surface superconducting states in polycrystalline MgB₂ using dc magnetic and ac susceptibility measurements, highlighting surface effects in this superconductor.
Contribution
First experimental demonstration of surface superconducting states in polycrystalline MgB₂ through combined magnetic and ac susceptibility analysis.
Findings
Surface superconducting states observed in MgB₂
AC susceptibility confirms surface effects under dc fields
Magnetic measurements support surface superconductivity presence
Abstract
We report results of dc magnetic and ac linear low-frequency study of a polycrystalline MgB sample. AC susceptibility measurements at low frequencies, performed under dc fields parallel to the sample surface, provide a clear evidence for surface superconducting states in MgB.
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