From antidot to dot superlattices: Magnetoresistance anomalies

被引：0

作者：

Rotter, P. ^{[1
]}

Hennig, R. ^{[1
]}

Suhrke, M. ^{[1
]}

Roessler, U. ^{[1
]}

机构：

[1] Universitaet Regensburg, Regensburg, Germany

来源：

Physica E: Low-Dimensional Systems and Nanostructures | 1997年 / 1卷 / 1-4期

关键词：

Electron transitions - Fermi level - Magnetic field effects - Magnetoresistance - Mathematical models - Quantum theory - Semiconductor superlattices;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

For low Fermi energies and large antidot diameters an antidot superlattice changes into a dot superlattice. A negative magnetoresistance (NMR) for low magnetic fields coexisting with a commensurability peak is observed in this transition regime. We reproduce these features for both classical and quantum-mechanical calculations in a model, which traces the NMR back to saddle points with varying heights between the antidots.

引用

页码：245 / 247