New type of antiferromagnetic state in stacked nanographite

被引：54

作者：

Harigaya, K

机构：

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

[2] Tokyo Inst Technol, Interact Res Ctr Sci, Meguro Ku, Tokyo 1528551, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 340卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(01)00430-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanographite systems show novel magnetic properties. We theoretically investigate stacking effects in the zigzag nanographite sheets to find a remarkable difference in the magnetic properties. For the simple stacking, there are no magnetic solutions. For the A-B stacking, we find antiferromagnetic solutions for strong onsite repulsions. The local magnetic moments tend to exist at the edge sites in each layer due to the large amplitude of wavefunctions at these sites. We study Variations between the A-A and A-B stackings, and find that the magnetism between the two stackings experiences the first-order phase transition. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：123 / 128

页数：6

共 19 条

[1]

[Anonymous], CARBON

[2] SOLITON CONFINEMENT IN POLYACETYLENE DUE TO INTERCHAIN COUPLING [J].