Magnetic behavior in zinc oxide zigzag nanoribbons

被引：149

作者：

Botello-Mendez, Andres R. ^{[1
]}

Lopez-Urias, Florentino ^{[1
]}

Terrones, Mauricio ^{[1
]}

Terrones, Humberto ^{[1
]}

机构：

[1] IPICYT, Adv Mat Dept, San Luis Potosi 78216, Mexico

来源：

NANO LETTERS | 2008年 / 8卷 / 06期

关键词：

D O I：

10.1021/nl072511q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We use first principles calculations to investigate the magnetic properties of zinc oxide nanoribbons with zigzag-terminated edges. The polarized spin density of states is calculated as a function of the nanoribbons width and thickness. All nanoribbons formed by a single layer exhibit a magnetic behavior independently of the width. By analyzing the charge density and spin density, we determine that the oxygen-dominated edge exhibits unpaired spins. When the thickness of the ribbons is increased, a magnetic moment is observed only for specific thicknesses.

引用

页码：1562 / 1565

页数：4

共 16 条

[1] Metallic edges in zinc oxide nanoribbons [J].

Botello-Mendez, A. R. ;

Martinez-Martinez, M. T. ;

Lopez-Urias, F. ;

Terrones, M. ;

Terrones, H. .

CHEMICAL PHYSICS LETTERS, 2007, 448 (4-6) :258-263

[2] Growth of ZnO thin films - experiment and theory [J].

Claeyssens, F ;

Freeman, CL ;

Allan, NL ;

Sun, Y ;

Ashfold, MNR ;

Harding, JH .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (01) :139-148

[3]

Garcia MA, 2007, NANO LETT, V7, P1489, DOI 10.1021/nl070198m

[4]

Hod O, 2007, NANO LETT, V7, P2295, DOI [10.1021/nl0708922, 10.1021/nI0708922]

[5]

NAKADA K, 1996, PHYS REV B, V54, P14954

[6] Electronic structure and magnetic properties of graphitic ribbons [J].

Pisani, L. ;

Chan, J. A. ;

Montanari, B. ;

Harrison, N. M. .

PHYSICAL REVIEW B, 2007, 75 (06)

[7]

Rao CNR, 2005, J MATER CHEM, V15, P573, DOI 10.1039/b4l2993h

[8] Magnetic semiconductors based on cobalt substituted ZnO [J].

Rode, K ;

Anane, A ;

Mattana, R ;

Contour, JP ;

Durand, O ;

LeBourgeois, R .

JOURNAL OF APPLIED PHYSICS, 2003, 93 (10) :7676-7678

[9] Manganese-doped ZnO nanobelts for spintronics [J].

Ronning, C ;

Gao, PX ;

Ding, Y ;

Wang, ZL ;

Schwen, D .

APPLIED PHYSICS LETTERS, 2004, 84 (05) :783-785

[10] Nonlocal exchange interaction removes half-metallicity in graphene nanoribbons [J].

Rudberg, Elias ;

Salek, Pawel ;

Luo, Yi .

NANO LETTERS, 2007, 7 (08) :2211-2213

← 1 2 →