Supercooling of the disordered vortex phase via minor hysteresis loops in 2H-NbSe2

Article

关键词: FLUX-LINE-LATTICE;    MAGNETIZATION HYSTERESIS;    II SUPERCONDUCTORS;    SINGLE-CRYSTALS;    ELASTIC THEORY;    MIXED-STATE;    CERU2;    METASTABILITY;    TRANSITION;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.61.12490

来源: SCIE

【 摘 要 】

We report on the observation of novel features in the minor hysteresis loops in a clean crystal of 2H-NbSe2, which displays a peak effect. The observed behavior can be explained in terms of a supercooling of the disordered vortex phase while cooling the superconductor in a field. Also, the extent of spatial order in a flux-line lattice formed in ascending fields is different from (and larger than) that in the descending fields below the peak position of the peak effect; this is attributed to a different degree of reorganization of the vortex state induced by changes in the field in the two cases.

【 授权许可】

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