Coexistence of Competing Antiferromagnetic and Superconducting Phases in the Underdoped Ba(Fe0.953Co0.047)2As2 Compound Using X-ray and Neutron Scattering Techniques

被引：277

作者：

Pratt, D. K. ^{[1
]}

Tian, W.

Kreyssig, A.

Zarestky, J. L.

Nandi, S.

Ni, N.

Bud'ko, S. L.

Canfield, P. C.

Goldman, A. I.

McQueeney, R. J.

机构：

[1] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 08期

关键词：

SPIN-DENSITY-WAVE; MAGNETIC ORDER; UPT3;

D O I：

10.1103/PhysRevLett.103.087001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Neutron and x-ray diffraction studies show that the simultaneous first-order transition to an orthorhombic and antiferromagnetic (AFM) ordered state in BaFe2As2 splits into two transitions with Co doping. For Ba(Fe0.953Co0.047)(2)As-2, a tetragonal-orthorhombic transition occurs at T-S=60 K, followed by a second-order transition to AFM order at T-N=47 K. Superconductivity occurs in the orthorhombic state below T-C=17 K and coexists with AFM. Below T-C, the static Fe moment is reduced along with a redistribution of low energy magnetic excitations indicating competition between coexisting superconductivity and AFM order.

引用

页数：4

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