Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb3Rh4Sn13

Pramana

C V Tomy2³  S Sarkar²  S Ramakrishnan²  D McK Paul¹  A K Grover1²  G Balakrishnan¹  A D Thakur² 

[1] Department of Physics, University of Warwick, Coventry CV4 7AL, UK$$;DCMP&MS, Tata Institute of Fundamental Research, Mumbai 400 005, India$$;Department of Physics, Indian Institute of Technology Bombay, Mumbai 400 076, India$$

关键词: Peak effect;    order—disorder transition;    phase coexistence;    spinodal temperature;    Yb3Rh4Sn13.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We have studied metastability effects pertaining to the peak effect (PE) in critical current density (𝐽c) via isofield scans in AC susceptibility measurements in a weakly pinned single crystal of Yb3Rh4Sn13 (𝑇c(0) ≈ 7.6 K). The order-disorder transition in this specimen proceeds in a multi-step manner. The phase coexistence regime between the onset temperature of the PE and the spinodal temperature (where metastability effects cease) seems to comprise two parts, where ordered and disordered regions dominate the bulk behavior, respectively. The PE line in the vortex phase diagram is argued to terminate at the low field end at a critical point in the elastic (Bragg) glass phase.

【 授权许可】

Unknown