Weak localization and dimensional crossover in carbon nanotube systems

被引：0
|
作者：
M. Salvato
M. Lucci
I. Ottaviani
M. Cirillo
S. Orlanducci
F. Toschi
M. L. Terranova
机构：
[1] Università di Roma “Tor Vergata”,Dipartimento di Fisica and MINAS Laboratory
[2] Università di Roma “Tor Vergata”,Dipartimento di Scienze e Tecnologie Chimiche and MINAS Laboratory
来源：
The European Physical Journal B | 2012年 / 85卷
关键词：
Solid State and Materials;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigate the effects of magnetic and electric fields on electron wavefunction interactions in single walled carbon nanotube bundles. The magnetoresistance measurements performed at 4.2 K and the dependence of the data upon the electric field reveal good agreement with weak localization theory. An electrical field conditioned characteristic length is associated to ohmic-non ohmic transition, observed below 85 K, in current voltage characteristics. This length results equal to the average bundles diameter just at T ≅ 85 K, indicating that 2D–3D crossover is responsible for the observed conductance transition.
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