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Superconducting properties of Cu $_{0.5}$ Tl $_{0.5}$ (BaCa)(CaMg) $_{1.5}$ Cu $_{4 - y}$ Cd_yO $_{12 - δ}$ ( $y = 0$ ,1,2,3) samples

Iqra Shaheen

Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan

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Nawazish A. Khan

Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan

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, and

Anila Kanwal

Materials Science Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan

E-mail Address: anilakanwal@phys.qau.edu.pk

Corresponding author.

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https://doi.org/10.1142/S0217979224500504Cited by:0 (Source: Crossref)

Abstract

In order to investigate the significance of electron–phonons interaction in the origin of high $T_{c}$ superconductivity, we synthesized Cd-doped Cu $_{0.5}$ Tl $_{0.5}$ (BaCa)(CaMg) $_{1.5}$ Cu $_{4 - y}$ Cd_yO $_{12 - δ}$ ( $y = 0$ , 1, 2, 3) samples and studied the superconducting properties. Onset temperature of the superconductivity Cu $_{0.5}$ Tl $_{0.5}$ (BaCa)(CaMg) $_{1.5}$ Cu $_{4 - y}$ Cd_yO $_{12 - δ}$ ( $y = 0$ , 1, 2, 3) samples suppress with the increased Cd doping ratio in the final. The phonon modes are associated to the vibrations of apical and planar oxygen whereas the CuO₂ planar oxygen modes are observed to harden with increasing Cd ratio in sample doping. The phase relaxation time is suppressed for the superconducting charge carriers in Cd-doped samples. The energy amount required to break the Cooper pairs apart increases. Dielectric measurements of Cu $_{0.5}$ Tl $_{0.5}$ (BaCa)(CaMg) $_{1.5}$ Cu $_{4 - y}$ Cd_yO $_{12 - δ}$ ( $y = 0$ , 1, 2, 3) samples have been done.

Keywords:

PACS: 74.25−q

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