Three Magnetization Peaks in HgBa$_2$Ca$_2$Cu$_3$O$_8$ Single Crystals

Yongze Ye; Yuhao Liu; Wenshan Hong; Yuan Li; Hai-Hu Wen

doi:10.1103/PhysRevB.111.144503

paper

Three Magnetization Peaks in HgBa $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{8}$ Single Crystals

arXiv:2502.10737 · doi:10.1103/PhysRevB.111.144503

Abstract

By measuring magnetization hysteresis loops of the superconducting HgBa $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{8}$ single crystals ( $T_{c}$ = 133 K), we observed three magnetization peaks in a wide temperature region. This is in contrast to the previous observation that there are only two magnetization peaks in many superconductors. Detailed analysis finds that the second peak here evolves from a kinky structure at low temperatures and gets enhanced at high temperatures; the third peak evolves from a general broad peak at low temperatures and evolves into a sharp peak and even a step-like one at high temperatures. We propose a general phase diagram to interpret these peaks, the second peak is corresponding to the order-disorder transition, while the third peak is associated with the elastic-plastic crossover. Our work unifies the understanding of different "second peak" structures in different systems and thus sheds new light in understanding the vortex dynamics in type-II superconductors.

6 pages, 5 figures

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Enhancement of $J$ $_{c}$ by Proton Irradiation in HgBa $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{8}$ $_{+}$ $_{δ}$ Single Crystals

Three Magnetization Peaks in HgBa2​Ca2​Cu3​O8​ Single Crystals

Abstract

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Cited by in corpus (1)

Three Magnetization Peaks in HgBa $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{8}$ Single Crystals