Linear diatomic crystal: single-electron states and large-radius excitons

被引：1

作者：

Adamyan, V. M. ^{[1
]}

Smyrnov, O. A. ^{[1
]}

机构：

[1] Odessa II Mechnikov Natl Univ, Dept Theoret Phys, UA-65026 Odessa, Ukraine

来源：

LOW TEMPERATURE PHYSICS | 2009年 / 35卷 / 05期

关键词：

binding energy; carbon nanotubes; elemental semiconductors; energy gap; excitons; ground states; WALLED CARBON NANOTUBES;

D O I：

10.1063/1.3132746

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The large-radius exciton spectrum in a linear crystal with two atoms in the unit cell is obtained using the single-electron eigenfunctions and band structure found by the zero-range potentials method. The ground-state exciton binding energies for the linear crystal in vacuum turn out to be larger than the corresponding energy gaps for any set of the crystal parameters.

引用

页码：394 / 399

页数：6

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