Gapping by squashing: Metal-insulator and insulator-metal transitions in collapsed carbon nanotubes

被引：110

作者：

Lammert, PE ^{[1
]}

Zhang, PH

Crespi, VH

机构：

[1] Penn State Univ, Dept Phys, Davey Lab 104, University Pk, PA 16802 USA

[2] Penn State Univ, Ctr Phys Mat, Davey Lab 104, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.84.2453

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Squashing brings circumferentially separated areas of a carbon nanotube into close proximity, drastically altering the low-energy electronic properties and (in some cases) reversing standard rules for metallic versus semiconducting behavior. Such a deformation mode, not requiring motion of tube ends, may be useful for devices. Uniaxial stress of a few kbar can reversibly collapse a small-radius tube. inducing a 0.1 eV gap with a very strong pressure dependence, while the collapsed state of a larger tube is stable. The low-energy electronic properties of chiral tubes are surprisingly insensitive to collapse.

引用

页码：2453 / 2456

页数：4

共 22 条

[1] Effect of the growth temperature on the diameter distribution and chirality of single-wall carbon nanotubes [J].

Bandow, S ;

Asaka, S ;

Saito, Y ;

Rao, AM ;

Grigorian, L ;

Richter, E ;

Eklund, PC .

PHYSICAL REVIEW LETTERS, 1998, 80 (17) :3779-3782

[2] Microscopic determination of the interlayer binding energy in graphite [J].

Benedict, LX ;

Chopra, NG ;

Cohen, ML ;

Zettl, A ;

Louie, SG ;

Crespi, VH .

CHEMICAL PHYSICS LETTERS, 1998, 286 (5-6) :490-496

[3] Pure carbon nanoscale devices: Nanotube heterojunctions [J].

Chico, L ;

Crespi, VH ;

Benedict, LX ;

Louie, SG ;

Cohen, ML .

PHYSICAL REVIEW LETTERS, 1996, 76 (06) :971-974

[4] FULLY COLLAPSED CARBON NANOTUBES [J].

CHOPRA, NG ;

BENEDICT, LX ;

CRESPI, VH ;

COHEN, ML ;

LOUIE, SG ;

ZETTL, A .

NATURE, 1995, 377 (6545) :135-138

[5] In situ band gap engineering of carbon nanotubes [J].

Crespi, VH ;

Cohen, ML ;

Rubio, A .

PHYSICAL REVIEW LETTERS, 1997, 79 (11) :2093-2096

[6] SELF-CONSISTENT EFFECTIVE-MASS THEORY FOR INTRALAYER SCREENING IN GRAPHITE-INTERCALATION COMPOUNDS [J].

DIVINCENZO, DP ;

MELE, EJ .

PHYSICAL REVIEW B, 1984, 29 (04) :1685-1694

[7] NEW ONE-DIMENSIONAL CONDUCTORS - GRAPHITIC MICROTUBULES [J].

HAMADA, N ;

SAWADA, S ;

OSHIYAMA, A .

PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1579-1581

[8] Deformation of carbon nanotubes by surface van der Waals forces [J].

Hertel, T ;

Walkup, RE ;

Avouris, P .

PHYSICAL REVIEW B, 1998, 58 (20) :13870-13873

[9] Uniaxial-stress effects on the electronic properties of carbon nanotubes [J].

Heyd, R ;

Charlier, A ;

McRae, E .

PHYSICAL REVIEW B, 1997, 55 (11) :6820-6824

[10] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

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