Phase Control of Graphene Nanoribbon by Carrier Doping: Appearance of Noncollinear Magnetism

被引：86

作者：

Sawada, Keisuke ^{[1
]}

Ishii, Fumiyuki ^{[1
,2
]}

Saito, Mineo ^{[1
]}

Okada, Susumu ^{[3
,4
,5
]}

Kawai, Takazumi ^{[6
]}

机构：

[1] Kanazawa Univ, Div Math & Phys Sci, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan

[2] Natl Inst Adv Ind Sci & Technol, RICS, Tsukuba, Ibaraki 3058568, Japan

[3] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

[4] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058571, Japan

[5] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[6] NEC Corp Ltd, Nano Elect Res Labs, Tsukuba, Ibaraki 3058501, Japan

来源：

NANO LETTERS | 2009年 / 9卷 / 01期

关键词：

SUPERCONDUCTIVITY; STATE;

D O I：

10.1021/nl8028569

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The zigzag graphene nanoribbon (ZGNR) has an antiferromagnetic property, that is, the relative spin angle theta between the two edges is 180 degrees. By using noncollinear first-principles calculations, we find that the magnetic phase of the ZGNR can be controlled by injecting either electrons or holes: as the carrier density increases, theta continuously decreases from 180 to 0, which indicates that the net magnetization is possible. Either FET doping or chemical doping is found to be possible.

引用

页码：269 / 272

页数：4

共 23 条

[1] ORGANIC MOLECULAR SOFT FERROMAGNETISM IN A FULLERENE-C60 [J].