Biexciton stability in carbon nanotubes

被引：45
|
作者：
Kammerlander, David
Prezzi, Deborah
Goldoni, Guido
Molinari, Elisa
Hohenester, Ulrich
机构：
[1] Univ Modena, CNR, INFM, Ctr Nanostruct & Biosyst Surfaces, I-41100 Modena, Italy
[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy
[3] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.99.126806
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have applied the quantum Monte Carlo method and tight-binding modeling to calculate the binding energy of biexcitons in semiconductor carbon nanotubes for a wide range of diameters and chiralities. For typical nanotube diameters we find that biexciton binding energies are much larger than previously predicted from variational methods, which easily brings the biexciton binding energy above the room temperature threshold.
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页数：4
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