NONPARABOLIC CONFINEMENT IN QUANTUM WIRE SUPERLATTICES

被引：48

作者：

DREXLER, H ^{[1
]}

HANSEN, W ^{[1
]}

KOTTHAUS, JP ^{[1
]}

HOLLAND, M ^{[1
]}

BEAUMONT, SP ^{[1
]}

机构：

[1] UNIV GLASGOW,DEPT ELECTR & ELECT ENGN,GLASGOW G12 8QQ,SCOTLAND

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.46.12849

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high-frequency polarizability of quantum wires in a novel metal-insulator-semiconductor field-effect transistor heterojunction is studied in the far-infrared regime. Whereas on conventional narrow quantum wires only the fundamental mode of the dimensional resonance is observed, the quantum wires investigated here exhibit higher harmonics. Additionally, at high electron densities and intermediate magnetic fields we observe a completely unexpected splitting of the fundamental mode. The behavior is discussed in view of nonparabolic confinement as well as interwire interaction.

引用

页码：12849 / 12852

页数：4

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