Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu₀.₅Tl₀.₅Ba₂Ca₃Cu₄O₁₂–δ superconductors

• Опубліковано в: : Физика низких температур
• Дата: 2010
• Автори: Mumtaz, M., Khan, N. A.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2010
• Теми: Свеpхпpоводимость, в том числе высокотемпеpатуpная
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/116894
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu₀.₅Tl₀.₅Ba₂Ca₃Cu₄O₁₂–δ superconductors / M. Mumtaz, N. A. Khan // Физика низких температур. — 2010. — Т. 36, № 2. — С. 196-201. — Бібліогр.: 57 назв. — англ.

The effect of suppression of antiferromagnetic order and charge stripes formation mechanism, by Zn3d¹⁰ (S = 0) substitution at Cu3d⁹ (S = 1/2) sites in CuO₂ planes of Cu₀.₅Tl₀.₅Ba₂Ca₃Cu₄O₁₂–δ, on superconductivity parameters is demonstrated. If antiferromagnetism and charge stripes have some role in bringing about superconductivity at a particular temperature, the doping of nonmagnetic Zn impurity would destroy it and hence the superconductivity. However we have observed enhanced superconducting properties with the increase of Zn doping in Cu₀.₅Tl₀.₅Ba₂Ca₃Cu₄O₁₂–δ superconductor. The decreased c-axis length with the increase of Zn doping improves interlayer coupling and hence the three-dimensional conductivity in the unit cell. The role of charge carriers in CuO₂ planes of Cu₀.₅Tl₀.₅Ba₂Ca₃Cu₄O₁₂–δ in bringing about superconductivity has also been explained.