Local antiferromagnetic correlations in the iron pnictide superconductors LaFeAsO1-xFx and Ca(Fe1-xCox)2As2 as seen via normal-state susceptibility

被引：102

作者：

Klingeler, R. ^{[1
]}

Leps, N. ^{[1
]}

Hellmann, I. ^{[1
]}

Popa, A. ^{[1
]}

Stockert, U. ^{[1
]}

Hess, C. ^{[1
]}

Kataev, V. ^{[1
]}

Grafe, H. -J. ^{[1
]}

Hammerath, F. ^{[1
]}

Lang, G. ^{[1
]}

Wurmehl, S. ^{[1
]}

Behr, G. ^{[1
]}

Harnagea, L. ^{[1
]}

Singh, S. ^{[1
]}

Buechner, B. ^{[1
]}

机构：

[1] IFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 02期

关键词：

ELECTRONIC PHASE-DIAGRAM; FLUCTUATIONS; SMFEASO1-XFX; INSTABILITY; PSEUDOGAP;

D O I：

10.1103/PhysRevB.81.024506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the interplay of magnetism and superconductivity in LaFeAsO1-xFx and Ca(Fe1-xCox)(2)As-2. While antiferromagnetic spin-density wave formation is suppressed and superconductivity evolves, all samples show a doping-independent strong increase in the normal-state susceptibility upon heating which appears a general feature of iron pnictides. The data provide evidence for robust local antiferromagnetic correlations persisting even in the superconducting regime of the phase diagram.

引用

页数：5

共 48 条

[1] 19F NMR investigation of the iron pnictide superconductor LaFeAsO0.89F0.11 [J].

Ahilan, K. ;

Ning, F. L. ;

Imai, T. ;

Sefat, A. S. ;

Jin, R. ;

McGuire, M. A. ;

Sales, B. C. ;

Mandrus, D. .

PHYSICAL REVIEW B, 2008, 78 (10)

[2] Coulomb repulsion and correlation strength in LaFeAsO from density functional and dynamical mean-field theories [J].

Anisimov, V. I. ;

Korotin, Dm M. ;

Korotin, M. A. ;

Kozhevnikov, A. V. ;

Kunes, J. ;

Shorikov, A. O. ;

Skornyakov, S. L. ;

Streltsov, S. V. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (07)

[3] Electronic polarons and bipolarons in iron-based superconductors: The role of anions [J].

Berciu, Mona ;

Elfimov, Ilya ;

Sawatzky, George A. .

PHYSICAL REVIEW B, 2009, 79 (21)

[4] Is LaFeAsO1-xFx an electron-phonon superconductor? [J].

Boeri, L. ;

Dolgov, O. V. ;

Golubov, A. A. .

PHYSICAL REVIEW LETTERS, 2008, 101 (02)

[5] A BCS-like gap in the superconductor SmFeAsO0.85F0.15 [J].

Chen, T. Y. ;

Tesanovic, Z. ;

Liu, R. H. ;

Chen, X. H. ;

Chien, C. L. .

NATURE, 2008, 453 (7199) :1224-1227

[6] Superconductivity at 43 K in SmFeAsO1-xFx [J].

Chen, X. H. ;

Wu, T. ;

Wu, G. ;

Liu, R. H. ;

Chen, H. ;

Fang, D. F. .

NATURE, 2008, 453 (7196) :761-762

[7] Surprises on the way from one- to two-dimensional quantum magnets: The ladder materials [J].

Dagotto, E ;

Rice, TM .

SCIENCE, 1996, 271 (5249) :618-623

[8] Magnetic order close to superconductivity in the iron-based layered LaO1-xFxFeAs systems [J].

de la Cruz, Clarina ;

Huang, Q. ;

Lynn, J. W. ;

Li, Jiying ;

Ratcliff, W., II ;

Zarestky, J. L. ;

Mook, H. A. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. ;

Dai, Pengcheng .

NATURE, 2008, 453 (7197) :899-902

[9] Competing orders and spin-density-wave instability in La(O1-xFx) FeAs [J].

Dong, J. ;

Zhang, H. J. ;

Xu, G. ;

Li, Z. ;

Li, G. ;

Hu, W. Z. ;

Wu, D. ;

Chen, G. F. ;

Dai, X. ;

Luo, J. L. ;

Fang, Z. ;

Wang, N. L. .

EPL, 2008, 83 (02)

[10]

Drew AJ, 2009, NAT MATER, V8, P310, DOI [10.1038/NMAT2396, 10.1038/nmat2396]

← 1 2 3 4 5 →