Evidence for Matthiessen's rule in the normal state resistivity of zinc doped yttrium barium copper oxide
Evidence for Matthiessen's rule in the normal state resistivity of zinc doped yttrium barium copper oxide
复制标题
锌掺杂钇钡铜氧化物常态电阻率中马蒂森定律的证据
DOI：
10.1088/0953-2048/4/1s/078
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发表时间：
1991
影响因子：
3.6
通讯作者：
W. Y. Liang
中科院分区：
文献类型：
--
作者：
J. Cooper;S. D. Obertelli;P. Freeman;D. Zheng;J. Loram;W. Y. Liang
本文测量了Y_1Ba_2（Cu_（1-x）Zn_x）_3O_7（x在0.01-0.10范围内）的若干烧结样品的电阻率ρ（T）。在Tc以上，d ρ/dT福尔斯随着体积密度的增加而平稳下降，并且与x无关，如通过对等密度合金的测量所证实的。假设d ρ/dT与x无关，他们发现T= 0时的外推剩余电阻率（ρ res）在0 ≤ x ≤ 0.07的范围内随x线性增加。这些事实表明，在ρ的线性项来自一个内在的散射机制，这是独立的x，并取代锌原子作为独立的散射中心，根据正常金属的Matthiessen规则。
The authors have measured the electrical resistivity rho (T) for a number of sintered samples of Y1Ba2(Cu1-xZnx)3O7 with x in the range 0.01-0.10. Above Tc, d rho /dT falls smoothly with increasing bulk density and is independent of x as confirmed by measurements on alloys of equal density. Taking d rho /dT to be independent of x, they find that the extrapolated residual resistivity ( rho res) at T=O increases linearly with x in the range O<or=x<or=0.07. These facts suggest that the linear term in rho arises from an intrinsic scattering mechanism which is independent of x, and that the substituting zinc atoms act as independent scattering centres, in accordance with Matthiessen's rule for normal metals.