Metal nanoring and tube formation on carbon nanotubes -: art. no. 045409

被引:37
作者
Bagci, VMK [1 ]
Gülseren, O
Yildirim, T
Gedik, Z
Ciraci, S
机构
[1] Bilkent Univ, Dept Phys, TR-06533 Bilkent, Turkey
[2] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
关键词
D O I
10.1103/PhysRevB.66.045409
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The structural and electronic properties of aluminum-covered single-wall carbon nanotubes (SWNT's) are studied from first principles for a large number of coverages. Aluminum-aluminum interaction, that is stronger than aluminum-tube interaction, prevents uniform metal coverage, and hence gives rise to the clustering. However, a stable aluminum ring and aluminum nanotube with well defined patterns can also form around the semiconducting SWNT's and lead to metallization. The persistent current in the Al nanoring is discussed to show that a high magnetic field can be induced at the center of SWNT.
引用
收藏
页码:454091 / 454095
页数:5
相关论文
共 31 条
[1]   PLASTIC-DEFORMATION OF NANOMETER-SCALE GOLD CONNECTIVE NECKS [J].
AGRAIT, N ;
RUBIO, G ;
VIEIRA, S .
PHYSICAL REVIEW LETTERS, 1995, 74 (20) :3995-3998
[2]   CONDUCTANCE STEPS AND QUANTIZATION IN ATOMIC-SIZE CONTACTS [J].
AGRAIT, N ;
RODRIGO, JG ;
VIEIRA, S .
PHYSICAL REVIEW B, 1993, 47 (18) :12345-12348
[3]   Quantum suppression of superconductivity in ultrathin nanowires [J].
Bezryadin, A ;
Lau, CN ;
Tinkham, M .
NATURE, 2000, 404 (6781) :971-974
[4]   Quantum effects in electrical and thermal transport through nanowires [J].
Ciraci, S ;
Buldum, A ;
Batra, IP .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (29) :R537-R568
[5]   Quantum superposition of distinct macroscopic states [J].
Friedman, JR ;
Patel, V ;
Chen, W ;
Tolpygo, SK ;
Lukens, JE .
NATURE, 2000, 406 (6791) :43-46
[6]   Reversible band-gap engineering in carbon nanotubes by radial deformation -: art. no. 155410 [J].
Gülseren, O ;
Yildirim, T ;
Ciraci, S ;
Kiliç, Ç .
PHYSICAL REVIEW B, 2002, 65 (15) :1554101-1554107
[7]   Noncrystalline structures of ultrathin unsupported nanowires [J].
Gulseren, O ;
Ercolessi, F ;
Tosatti, E .
PHYSICAL REVIEW LETTERS, 1998, 80 (17) :3775-3778
[8]   Systematic ab initio study of curvature effects in carbon nanotubes -: art. no. 153405 [J].
Gülseren, O ;
Yildirim, T ;
Ciraci, S .
PHYSICAL REVIEW B, 2002, 65 (15) :1-4
[9]   Tunable adsorption on carbon nanotubes -: art. no. 116802 [J].
Gülseren, O ;
Yildirim, T ;
Ciraci, S .
PHYSICAL REVIEW LETTERS, 2001, 87 (11) :116802-1
[10]   Nanowire gold chains:: Formation mechanisms and conductance [J].
Häkkinen, H ;
Barnett, RN ;
Scherbakov, AG ;
Landman, U .
JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (39) :9063-9066