Universal Doping Dependence Of The Ground-state Staggered Magnetization Of Cupraternsuperconductors

Rinat Ofer; Amit Keren; Omar Chmaissem; Alex Amato

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Universal Doping Dependence Of The Ground-state Staggered Magnetization Of Cupraternsuperconductors

机译：铜超导体基态交错磁化的通用掺杂依赖性

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Using muon spin rotation we determine the zero-temperature staggered antiferromagnetic order parameter M_0 versus hole doping measured from optimum Δp_m, in the (Ca_xLa_(1-x))(Ba_(1.75-x)La_(0.25-x)Cu_3O_y system. In this system the maximum T_c and the superexchange J vary by 30% between families (x). M_0(x, Δp_m) is found to be x independent. Using neutron diffraction we also determine the lattice parameters variations for all x and doping. The oxygen buckling angle is found to change with x, implying a change in the holes kinetic energy. We discuss the surprising insensitivity of M_0(x, Δp_m) to the kinetic-energy variations in the framework of the t-J model.

机译：在（Ca_xLa_（1-x））（Ba_（1.75-x）La_（0.25-x）Cu_3O_y系统中，使用μ自旋旋转，我们确定零温度交错反铁磁阶数参数M_0与根据最佳Δp_m测量的空穴掺杂的关系。这个系统的最大T_c和超交换J在族（x）之间变化30％。M_0（x，Δp_m）被发现与x无关。使用中子衍射，我们还确定了所有x和掺杂的晶格参数变化。我们发现屈曲角随x改变，这意味着空穴动能的变化，我们讨论了t_0模型框架中M_0（x，Δp_m）对动能变化的不敏感。

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来源
《Physical review》 |2008年第14期|65-68|共4页
作者
Rinat Ofer; Amit Keren; Omar Chmaissem; Alex Amato;
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cuprate superconductors (high-Tc and insulating parent compounds); magnetic properties; effects of crystal defects, doping and substitution; neutron inelastic scattering;

机译：铜酸盐超导体（高Tc和绝缘母体化合物）;磁性能;晶体缺陷;掺杂和取代的影响;中子非弹性散射;

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Universal Doping Dependence Of The Ground-state Staggered Magnetization Of Cupraternsuperconductors

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