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Hydrostatic Pressure Effect on the Pinning Mechanism of α‐BiPd Noncentrosymmetric Superconductors
Author(s) -
Kannan Murugesan,
Arumugam Sonachalam,
Thiyagarajan Raman,
Kalaiselvan Ganesan,
Manikandan Krishnan,
Neha Prakriti,
Patnaik Satyabrata
Publication year - 2019
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201900344
Subject(s) - condensed matter physics , superconductivity , hydrostatic pressure , pinning force , magnetic field , phase diagram , flux pinning , type ii superconductor , critical field , physics , crossover , zener pinning , materials science , phase (matter) , critical current , thermodynamics , quantum mechanics , artificial intelligence , computer science
Temperature and field dependence of magnetic measurements under hydrostatic pressure are carried out on a noncentrosymmetric superconductor α‐BiPd up to ≈1 GPa, and a 3D (temperature—magnetic field—pressure) phase diagram is reported for the first time. The experimental results are analyzed using various theoretical approaches, such as the Ginzburg–Landau formula, Bean's critical state model, Dew–Hughes model, and collective pinning theory, and several superconducting parameters are also estimated. Critical temperature, critical current density, and pinning force are decreased with the application of both pressure and magnetic field. It is observed that pressure diminishes the superconductivity moderately and changes the mean free path, which leads to crossover from the δT c pinning mechanism to δl type in α‐BiPd.