Doping evolution of antiferromagnetism and transport properties in nonsuperconducting BaFe2-2xNixCrxAs2

被引：15

作者：

Zhang, Rui ^{[1
]}

Gong, Dongliang ^{[1
]}

Lu, Xingye ^{[1
]}

Li, Shiliang ^{[1
,2
]}

Laver, Mark ^{[3
]}

Niedermayer, Christof ^{[3
]}

Danilkin, Sergey ^{[4
]}

Deng, Guochu ^{[4
]}

Dai, Pengcheng ^{[1
,5
]}

Luo, Huiqian ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China

[3] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

[4] Australian Nucl Sci & Technol Org, Bragg Inst, Lucas Heights, NSW 2234, Australia

[5] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 09期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

QUANTUM CRITICAL-POINT; SUPERCONDUCTIVITY; CRITICALITY;

D O I：

10.1103/PhysRevB.91.094506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report elastic neutron scattering and transport measurements on the Ni and Cr equivalently doped iron pnictide BaFe2-2xNixCrxAs2. Compared with the electron-doped BaFe2-xNixAs2, the long-range antiferromagnetic (AF) order in BaFe2-2xNixCrxAs2 is gradually suppressed with vanishing ordered moment and Neel temperature near x = 0.20 without the appearance of superconductivity. A detailed analysis on the transport properties of BaFe2-xNixAs and BaFe2-2xNixCrxAs2 suggests that the non-Fermi-liquid behavior associated with the linear resistivity as a function of temperature may not correspond to the disappearance of the static AF order. From the temperature dependence of the resistivity in overdoped compounds without static AF order, we find that the transport properties are actually affected by Cr impurity scattering, which may induce a metal-to-insulator crossover in highly doped BaFe1.7-yNi0.3CryAs2.

引用

页数：10

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