Abstract
The magnetic response related to the paramagnetic Meissner effect (PME) is studied in a high quality single crystal ZrB12 with non-monotonic vortex–vortex interactions. We observe the expulsion and penetration of magnetic flux in the form of vortex clusters with increasing temperature. A vortex phase diagram is constructed, and shows that the PME can be explained by considering the interplay among the flux compression, the different temperature dependencies of the vortex–vortex and the vortex–pin interactions, and thermal fluctuations. Such a scenario is in good agreement with the results of magnetic relaxation measurements.
Highlights
Perfect diamagnetism in a sufficiently low magnetic field (Meissner effect) and zero resistivity are the two most essential phenomena of superconductivity
We would like to mention that positive magnetization signal is only observed at relatively small magnetic fields, since at higher magnetic fields the paramagnetic signal from the paramagnetic Meissner effect (PME) is combined with a relatively strong diamagnetic signal from the superconductor
Many models have been proposed to explain the PME, including the π-junctions related to d-wave pairing symmetry in high-Tc superconductors, and flux compression mechanisms
Summary
Jun-Yi Ge1 , Vladimir N Gladilin, Nikolay E Sluchanko, A Lyashenko, Volodimir B Filipov, Joseph O Indekeu and Victor V Moshchalkov. The magnetic response related to the paramagnetic Meissner effect (PME) is studied in a high quality author(s) and the title of the work, journal citation single crystal ZrB12 with non-monotonic vortex–vortex interactions. Penetration of magnetic flux in the form of vortex clusters with increasing temperature. A vortex phase diagram is constructed, and shows that the PME can be explained by considering the interplay among the flux compression, the different temperature dependencies of the vortex–vortex and the vortex–pin interactions, and thermal fluctuations. Such a scenario is in good agreement with the results of magnetic relaxation measurements
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