MAGNETISM IN GRAPHENE SYSTEMS

被引：69

作者：

Kan, Erjun ^{[1
]}

Li, Zhenyu ^{[1
]}

Yang, Jinlong ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

NANO | 2008年 / 3卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Graphene; first-principles calculations; magnetism; half metal;

D O I：

10.1142/S1793292008001350

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene has attracted great interest in materials science, owing to its novel electronic structures. Recently, magnetism discovered in graphene-based systems has opened up the possibility of their spintronics application. This paper provides a comprehensive review of the magnetic behaviors and electronic structures of graphene systems, including two-dimensional graphene, one-dimensional graphene nanoribbons, and zero-dimensional graphene nanoclusters. Theoretical research suggests that such metal-free magnetism mainly comes from the localized states or edges states. By applying an external electric field, or by chemical modification, we can turn the zigzag nanoribbon systems into half metal, thus obtaining a perfect spin filter.

引用

页码：433 / 442

页数：10

共 57 条

[1] Scanning tunneling microscopy fingerprints of point defects in graphene: A theoretical prediction [J].