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Weak ferromagnetism in non-centrosymmetric BiPd 4K superconductor
We report synthesis of non-centrosymmetric BiPd single crystal by self flux
method. The BiPd single crystal is crystallized in monoclinic structure with
the P21 space group. Detailed SEM (Scanning Electron Microscopy) results show
that the crystals are formed in slab like morphology with homogenous
distribution of Bi and Pd. The magnetic susceptibility measurement confirmed
that the BiPd compound is superconducting below 4K. Further, BiPd exhibits weak
ferromagnetism near the superconducting transition temperature in isothermal
magnetization (MH) measurements. The temperature dependent electrical
resistivity also confirmed that the BiPd single crystal is superconducting at
Tc=4K. Magneto transport measurements showed that the estimated Hc2(0) value is
around 7.0kOe. We also obtained a sharp peak in heat capacity Cp(T)
measurements at below 4K due to superconducting ordering. The normalized
specific-heat jump, DC/{\gamma}Tc, is 1.52, suggesting the BiPd to be an
intermediate BCS coupled superconductor. The pressure dependent electrical
resistivity shows the Tc decreases with increasing applied pressure and the
obtained dTc/dP is -0.62K/Gpa.Comment: 11 pages Text+Fig
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