Ultrathin epitaxial cobalt films on graphene for spintronic investigations and applications

被引：65

作者：

Vo-Van, Chi ^{[1
,2
]}

Kassir-Bodon, Zoukaa ^{[1
,2
]}

Yang, Hongxin ^{[3
]}

Coraux, Johann ^{[1
,2
]}

Vogel, Jan ^{[1
,2
]}

Pizzini, Stefania ^{[1
,2
]}

Bayle-Guillemaud, Pascale ^{[4
]}

Chshiev, Mairbek ^{[3
]}

Ranno, Laurent ^{[1
,2
]}

Guisset, Valerie ^{[1
,2
]}

David, Philippe ^{[1
,2
]}

Salvador, Violaine ^{[4
]}

Fruchart, Olivier ^{[1
,2
]}

机构：

[1] CNRS, Inst Neel, F-38042 Grenoble 9, France

[2] Univ Grenoble 1, F-38042 Grenoble 9, France

[3] INAC, CEA Grenoble, SPINTEC CEA CNRS UJF G INP UMR8191, F-38054 Grenoble 9, France

[4] INAC SP2M LEMMA, CEA Grenoble, Grenoble, France

来源：

NEW JOURNAL OF PHYSICS | 2010年 / 12卷

关键词：

MAGNETIC-ANISOTROPY; LARGE-AREA; GROWTH;

D O I：

10.1088/1367-2630/12/10/103040

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Graphene is an attractive candidate in spintronics for a number of reasons, among which are its electric-field-controlled conductivity, its expected long spin lifetime and its two-dimensional nature. A number of recent proposals call for the development of high-quality ferromagnetic thin films in contact with graphene, whereas only thick polycrystalline or three-dimensional (nanoclusters) morphologies have been demonstrated so far. We report on the growth of flat, epitaxial ultrathin Co films on graphene using pulsed laser deposition. These display perpendicular magnetic anisotropy (PMA) in the thickness range 0.5-1 nm, in agreement with our first-principles calculations. PMA, epitaxy and ultra-small thickness bring new perspectives on graphene-based spintronic devices making use of the zero-field control of an arbitrary magnetization direction, band matching between electrodes and graphene, and interface phenomena such as the Rashba effect and electric field control of magnetism.

引用

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