X-ray absorption and magnetic circular dichroism of graphene/Ni(111)

被引：20

作者：

Dedkov, Yu. S. ^{[1
]}

Sicot, M. ^{[2
]}

Fonin, M. ^{[2
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[2] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 09期

关键词：

CARBON;

D O I：

10.1063/1.3360340

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present systematic investigations of the electronic and magnetic properties of the graphene/Ni(111) system by means of x-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) at the Ni L-2,L-3 and C K absorption edges. The XAS C 1s ->pi*,sigma* spectra show dramatic changes as the angle, alpha, between the electrical vector of light and normal of the sample is varied reflecting the symmetry of the final state (sigma or pi). XMCD spectra reveal an induced magnetic moment of the carbon atoms in the graphene layer. Our experimental results are discussed in the light of previous results on the observation of induced magnetism in nonmagnetic materials. (C) 2010 American Institute of Physics. [doi:10.1063/1.3360340]

引用

页数：3

共 19 条

[1] The magnetism of nickel monolayers [J].

Baberschke, K .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1996, 62 (05) :417-427

[2] First-principles calculation of the electronic structure and EELS spectra at the graphene/Ni(III) interface [J].

Bertoni, G ;

Calmels, L ;

Altibelli, A ;

Serin, V .

PHYSICAL REVIEW B, 2005, 71 (07)

[3] PI-ASTERISK AND SIGMA-ASTERISK EXCITONS IN C-1S ABSORPTION OF GRAPHITE [J].

BRUHWILER, PA ;

MAXWELL, AJ ;

PUGLIA, C ;

NILSSON, A ;

ANDERSON, S ;

MARTENSSON, N .

PHYSICAL REVIEW LETTERS, 1995, 74 (04) :614-617

[4] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS [J].

CARRA, P ;

THOLE, BT ;

ALTARELLI, M ;

WANG, XD .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :694-697

[5] Contact induced magnetism in carbon nanotubes [J].

Céspedes, O ;

Ferreira, MS ;

Sanvito, S ;

Kociak, M ;

Coey, JMD .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (10) :L155-L161

[6] Rashba effect in the graphene/Ni(111) system [J].

Dedkov, Yu. S. ;

Fonin, M. ;

Ruediger, U. ;

Laubschat, C. .

PHYSICAL REVIEW LETTERS, 2008, 100 (10)

[7] Graphene-protected iron layer on Ni(111) [J].

Dedkov, Yu. S. ;

Fonin, M. ;

Ruediger, U. ;

Laubschat, C. .

APPLIED PHYSICS LETTERS, 2008, 93 (02)

[8] A possible source of spin-polarized electrons: The inert graphene/Ni(111) system [J].

Dedkov, Yu. S. ;

Fonin, M. ;

Laubschat, C. .

APPLIED PHYSICS LETTERS, 2008, 92 (05)

[9] Graphene: Status and Prospects [J].

Geim, A. K. .

SCIENCE, 2009, 324 (5934) :1530-1534

[10] Graphite and graphene as perfect spin filters [J].

Karpan, V. M. ;

Giovannetti, G. ;

Khomyakov, P. A. ;

Talanana, M. ;

Starikov, A. A. ;

Zwierzycki, M. ;

van den Brink, J. ;

Brocks, G. ;

Kelly, P. J. .

PHYSICAL REVIEW LETTERS, 2007, 99 (17)

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