Manikandan, K and Pervin, Rukshana and Saravanan, C and Sathiskumar, M and Chakraborty, Nirman and Shirage, Parasharam M and Mondal, Swastik and Srihari, Velaga and Poswal, Himanshu Kumar and Arumugam, S (2020) Influence of pressure on the transport, magnetic, and structural properties of superconducting Cr0.0009NbSe2 single crystal. RSC Advances, 10 (22). pp. 13112-13125. ISSN 2046-2069

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We investigate the superconducting critical current density (J(c)), transition temperature (T-c), and flux pinning properties under hydrostatic pressure (P) for Cr0.0009NbSe2 single crystal. The application of P enhances T-c in both electrical resistivity (similar to 0.38 K GPa(-1): 0 <= P <= 2.5 GPa) and magnetization (similar to 0.98 K GPa(-1): 0 <= P <= 1 GPa) measurements, which leads to a monotonic increase in J(c) and flux pinning properties. The field-dependent J(c) at various temperatures under P is analyzed within the collecting pinning theory and it shows that delta T-c pinning is the crossover to delta l pinning above the critical pressure (P-c similar to 0.3 GPa). Our systematic analysis of the flux pinning mechanism indicates that both the density of pinning centers and pinning forces greatly increase with the application of P, which leads to an enhancement in the vortex state. Structural studies using synchrotron X-ray diffraction under pressure illustrate a stable hexagonal phase without any significant impurity phase and lattice parameter reduction with P shows highly anisotropic nature.

Item Type: Article
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 05 Feb 2021 11:19
Last Modified: 05 Feb 2021 11:19

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