Towards electron spin resonance of mechanically exfoliated graphene

被引：51

作者：

Ciric, Luka ^{[1
]}

Sienkiewicz, Andrzej ^{[1
]}

Nafradi, Balint ^{[1
]}

Mionic, Marijana ^{[1
]}

Magrez, Arnaud ^{[1
]}

Forro, Laszlo ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2009年 / 246卷 / 11-12期

关键词：

TRANSPORT;

D O I：

10.1002/pssb.200982325

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have attempted to prepare graphene samples by mechanical exfoliation of HOPG (highly oriented pyrolytic graphite) using scotch tape. Random testing of the flakes by AFM has shown in majority single layer graphene. Nevertheless, the presence of ultrathine graphite cannot be excluded in the large assembly of flakes needed for electron spin resonance (ESR) measurements. Graphene flakes sitting on ESR-silent scotch tapes were stacked parallel to form a multilayer sandwich. The ESR measurements performed in the 4-300 K range yielded narrow Lorentzian line. The spin susceptibility was decreasing linearly with decreasing temperature as expected for the conical band dispersion of graphene. Below 70 K the spin susceptibility started to deviate from the linear temperature dependence and a Curie-like behavior was observed. This contribution to the susceptibility is due to the existence of defects or impurities, which are in strong exchange coupling limit with conduction electrons. The temperature dependence of the linewidth suggests Elliott's mechanism for spin relaxation in graphene flakes. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2558 / 2561

页数：4

共 16 条

[1] MAGNETIC ANISOTROPIES OF ALIGNED CARBON NANOTUBES [J].

CHAUVET, O ;

FORRO, L ;

BACSA, W ;

UGARTE, D ;

DOUDIN, B ;

DEHEER, WA .

PHYSICAL REVIEW B, 1995, 52 (10) :R6963-R6966

[2] Graphene field-effect devices [J].

Echtermeyer, T. J. ;

Lemme, M. C. ;

Bolten, J. ;

Baus, M. ;

Ramsteiner, M. ;

Kurz, H. .

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 2007, 148 (1) :19-26

[3] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

[4] Fluctuating field model for conduction electron spin resonance in graphite [J].

Huber, DL ;

Urbano, RR ;

Sercheli, MS ;

Rettori, C .

PHYSICAL REVIEW B, 2004, 70 (12) :125417-1

[5] Measurement of the elastic properties and intrinsic strength of monolayer graphene [J].

Lee, Changgu ;

Wei, Xiaoding ;

Kysar, Jeffrey W. ;

Hone, James .

SCIENCE, 2008, 321 (5887) :385-388

[6] CONDUCTION-ELECTRON SPIN-FLIP BY PHONONS IN METALS - ANALYSIS OF EXPERIMENTAL-DATA [J].

MONOD, P ;

BEUNEU, F .

PHYSICAL REVIEW B, 1979, 19 (02) :911-916

[7] Electronic properties of graphene [J].

Novoselov, K. S. ;

Morozov, S. V. ;

Mohinddin, T. M. G. ;

Ponomarenko, L. A. ;

Elias, D. C. ;

Yang, R. ;

Barbolina, I. I. ;

Blake, P. ;

Booth, T. J. ;

Jiang, D. ;

Giesbers, J. ;

Hill, E. W. ;

Geim, A. K. .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2007, 244 (11) :4106-4111

[8] Two-dimensional gas of massless Dirac fermions in graphene [J].

Novoselov, KS ;

Geim, AK ;

Morozov, SV ;

Jiang, D ;

Katsnelson, MI ;

Grigorieva, IV ;

Dubonos, SV ;

Firsov, AA .

NATURE, 2005, 438 (7065) :197-200

[9] Electric field effect in atomically thin carbon films [J].

Novoselov, KS ;

Geim, AK ;

Morozov, SV ;

Jiang, D ;

Zhang, Y ;

Dubonos, SV ;

Grigorieva, IV ;

Firsov, AA .

SCIENCE, 2004, 306 (5696) :666-669

[10] Graphene-based composite materials [J].

Stankovich, Sasha ;

Dikin, Dmitriy A. ;

Dommett, Geoffrey H. B. ;

Kohlhaas, Kevin M. ;

Zimney, Eric J. ;

Stach, Eric A. ;

Piner, Richard D. ;

Nguyen, SonBinh T. ;

Ruoff, Rodney S. .

NATURE, 2006, 442 (7100) :282-286

← 1 2 →