- Tytuł:
- Codoping Effect of Zn and Pr in $YBa_2Cu_3O_{7-δ}$
- Autorzy:
-
Naik, M.
Sarode, P.
Prabhu, R.
Priolkar, K.
Vasanthacharya, N. - Powiązania:
- https://bibliotekanauki.pl/articles/1808131.pdf
- Data publikacji:
- 2009-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
74.62.Bf
74.62.Dh
74.72.Bk - Opis:
- In this paper we present the resistivity data for Pr and Zn codoped compound $Y_{1-x}Pr_xBa_2[Cu_{1- y}Zn_y]_3O_{7-δ}$ with 0 & y & 0.1 and x=0.0, 0.1 and 0.2. The data is analysed in terms of the superconducting critical temperature $T_c$, residual resistivity $ρ_0$ and the resistivity slope dρ/dT corresponding to the linear ρ-T region. It is found that for x=0.1 Pr has a minimal influence on the in-plane processes for Zn impurity alone affecting slightly $T_c$ and $ρ_0$. The slope dρ/dT becomes larger for 0.03 & y & 0.06 leading to larger depining effect and hence slower fall of $T_c$ as a function of y. For x = 0.2 there is a drastic change, $ρ_0$ becomes abnormally large, dρ/dT becomes negative implying absence of depinning and a totally pinned charge stripes. Superconductivity vanishes at y=0.03. It is concluded that for x = 0.2 Pr converts the system from overdoped to underdoped region leading to the universal superconductor-insulator transition.
- Źródło:
-
Acta Physica Polonica A; 2009, 115, 3; 742-744
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł