Studies on Fabrication of Ag/HgBaCaCuO/CdSe Heterostructures by Pulse-Electrodeposition Route
D. D. Shivagan, P. M. Shirage, S. H. Pawar
TL;DR
This study reports the successful fabrication of Ag/HgBaCaCuO/CdSe heterostructures via pulse-electrodeposition, demonstrating enhanced superconducting properties and the influence of laser irradiation on critical temperature and current density.
Contribution
It introduces a novel pulse-electrodeposition method for creating metal/superconductor/semiconductor heterostructures with optimized parameters and improved superconducting performance.
Findings
Critical temperature increased from 115 K to 117.2 K after CdSe deposition.
Further enhancement of Tc to 120.3 K with laser irradiation.
Superconducting current density (Jc) improved significantly after heterostructure fabrication.
Abstract
Metal/superconductor/semiconductor (Ag/HgBaCaCuO/CdSe) heterostructures have been successfully fabricated using pulse-electrodeposition technique. The electrochemical parameters are optimized and diffusion free growth of CdSe onto Ag/HgBaCaCuO was obtained by employing under-potential deposition and by studying nucleation and growth mechanism during deposition. The heterostructures are characterized by X-ray diffraction (XRD), full-width at half-maximum (FWHM), scanning electron microscopy (SEM) studies and low temperature four probe electrical resistivity measurements. After the deposition of CdSe the critical transition temperature of HgBaCaCuO films was found be increased from 115 K with Jc = 1.7 x 103 A/cm2 to 117.2 K with Jc = 1.91 x 103 A/cm2. When the heterostructure was irradiated with red He-Ne laser (2 mW), the Tc was further enhanced to 120.3 K with Jc = 3.7 x 103 A/cm2. This…
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