Strain induced correlation gaps in carbon nanotubes

被引：15

作者：

Gloor, TA ^{[1
]}

Mila, F ^{[1
]}

机构：

[1] BSP, Ecole Polytech Fed Lausanne, Inst Theorie Phenomenes Phys, CH-1015 Lausanne, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL B | 2004年 / 38卷 / 01期

关键词：

D O I：

10.1140/epjb/e2004-00092-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We calculate the change in the correlation gap of armchair carbon nanotubes with uniaxial elastic strain. We predict that such a stretching will enlarge the correlation gap for all carbon nanotubes by a change that could be as large as several meV per percent of applied strain, in contrast with pure band structure calculations where no change for armchair carbon nanotubes is predicted. The correlation effects are considered within a self-consistent Hartree-Fock approximation to the Hubbard model with on-site repulsion only.

引用

页码：9 / 12

页数：4

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