Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges

K. Kusakabe; M. Maruyama; S. Tsuneyuki; K. Akagi; Y. Yoshimoto; J. Yamauchi

doi:10.1016/j.jmmm.2003.12.1350

Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges

K. Kusakabe, M. Maruyama, S. Tsuneyuki, K. Akagi, Y. Yoshimoto, J. Yamauchi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Based on our theoretical prediction of magnetic nanographite, we examined magnetism in various graphitic structures in nanometer scale using the first-principles calculation. When di-hydrogenated carbon atoms are created at a zigzag edge, high-spin ground states are found in carbon nanorings, which are short zigzag nanotubes, as well as graphene structures. The maximum total spin is proportional to the length of graphene ribbon or the diameter of the nanoring. The magnetism is interpreted as a realization of flat-band ferromagnetism known in the Hubbard model on bipartite lattices.

Original language	English
Pages (from-to)	e737-e738
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1350
Publication status	Published - 2004 May 1
Externally published	Yes

Keywords

Edge states
Flat-band ferromagnetism
Nanographite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2003.12.1350

Fingerprint Dive into the research topics of 'Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges'. Together they form a unique fingerprint.

Cite this

@article{ae5bb4d305d84ae3991cd91a23369694,

title = "Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges",

abstract = "Based on our theoretical prediction of magnetic nanographite, we examined magnetism in various graphitic structures in nanometer scale using the first-principles calculation. When di-hydrogenated carbon atoms are created at a zigzag edge, high-spin ground states are found in carbon nanorings, which are short zigzag nanotubes, as well as graphene structures. The maximum total spin is proportional to the length of graphene ribbon or the diameter of the nanoring. The magnetism is interpreted as a realization of flat-band ferromagnetism known in the Hubbard model on bipartite lattices.",

keywords = "Edge states, Flat-band ferromagnetism, Nanographite",

author = "K. Kusakabe and M. Maruyama and S. Tsuneyuki and K. Akagi and Y. Yoshimoto and J. Yamauchi",

year = "2004",

month = may,

day = "1",

doi = "10.1016/j.jmmm.2003.12.1350",

language = "English",

volume = "272-276",

pages = "e737--e738",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges

AU - Kusakabe, K.

AU - Maruyama, M.

AU - Tsuneyuki, S.

AU - Akagi, K.

AU - Yoshimoto, Y.

AU - Yamauchi, J.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - Based on our theoretical prediction of magnetic nanographite, we examined magnetism in various graphitic structures in nanometer scale using the first-principles calculation. When di-hydrogenated carbon atoms are created at a zigzag edge, high-spin ground states are found in carbon nanorings, which are short zigzag nanotubes, as well as graphene structures. The maximum total spin is proportional to the length of graphene ribbon or the diameter of the nanoring. The magnetism is interpreted as a realization of flat-band ferromagnetism known in the Hubbard model on bipartite lattices.

AB - Based on our theoretical prediction of magnetic nanographite, we examined magnetism in various graphitic structures in nanometer scale using the first-principles calculation. When di-hydrogenated carbon atoms are created at a zigzag edge, high-spin ground states are found in carbon nanorings, which are short zigzag nanotubes, as well as graphene structures. The maximum total spin is proportional to the length of graphene ribbon or the diameter of the nanoring. The magnetism is interpreted as a realization of flat-band ferromagnetism known in the Hubbard model on bipartite lattices.

KW - Edge states

KW - Flat-band ferromagnetism

KW - Nanographite

UR - http://www.scopus.com/inward/record.url?scp=23144447437&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23144447437&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2003.12.1350

DO - 10.1016/j.jmmm.2003.12.1350

M3 - Article

AN - SCOPUS:23144447437

VL - 272-276

SP - e737-e738

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - SUPPL. 1

ER -