Nanotube-based molecular magnets with spin-polarized edge states

被引：13

作者：

Higuchi, Y ^{[1
]}

Kusakabe, K

Suzuki, N

Tsuneyuki, S

Yamauchi, J

Akagi, K

Yoshimoto, Y

机构：

[1] Niigata Univ, Grad Sch Sci & Technol, Niigata 9502181, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Univ Tokyo, Grad Sch Sci, Tokyo 1130033, Japan

[4] Keio Univ, Fac Sci & Technol, Yokohama, Kanagawa 2238522, Japan

[5] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 48期

关键词：

D O I：

10.1088/0953-8984/16/48/028

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Edge effects on possible magnetism appearing in finite hydrogenated zigzag nanotubes are investigated using the DFT-LSDA calculations. Our result shows that two types of edges, i.e. a mono-hydrogenated zigzag edge (MHZE) and a di-hydrogenated zigzag edge (DHZE), can give magnetic moments in finite nanotubes. Due to curvature of the tube, however, the total magnetic moment S-tot is smaller than an expected value given by a counting rule of S-tot, which holds for magnetic nanographite ribbons. In addition to magnetic nanotubes found by Okada and Oshiyama, we show that a (7, 0) tube and an (8, 0) tube with both MHZE and DHZE are magnetic. The reactions to create hydrogenated (7, 0) and (8, 0) tubes are exothermic.

引用

页码：S5689 / S5692

页数：4

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