Effect of long-range correlation on the metal-insulator transition in a disordered molecular crystal

被引：9

作者：

Unge, Mikael ^{[1
]}

Stafstrom, Sven ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys Chem & Biol, IFM, SE-58183 Linkoping, Sweden

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.74.235403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Localization lengths of the electronic states in a disordered two-dimensional system, resembling highly anisotropic molecular crystals such as pentacene, have been calculated numerically using the transfer matrix method. The disorder is based on a model with small random fluctuations of induced molecular dipole moments which give rise to long-range correlated disorder in the on-site energies as well as a coupling between the on-site energies and the intermolecular interactions. Our calculations show that molecular crystals such as pentacene can exhibit states with very long localization lengths with a possibility to reach a truly metallic state.

引用

页数：5

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