MAGNETOROTONS IN QUASI-3-DIMENSIONAL ELECTRON-SYSTEMS

被引：27

作者：

KARRAI, K

YING, X

DREW, HD

SANTOS, M

SHAYEGAN, M

YANG, SRE

MACDONALD, AH

机构：

[1] LAB PHYS SCI,COLLEGE PK,MD 20740

[2] PRINCETON UNIV,DEPT ELECT ENGN,PRINCETON,NJ 08544

[3] NATL RES COUNCIL CANADA,INST MICROSTRUCT SCI,OTTAWA K1A 0R6,ONTARIO,CANADA

[4] INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405

[5] INDIANA UNIV,MAT RES INST,BLOOMINGTON,IN 47405

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.67.3428

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dispersion relation for magnetoplasmons propagating perpendicular to the magnetic field is investigated for a quasi-three-dimensional electron system. The magnetic field is in the plane of a congruent-to 100-nm-wide electron slab which is confined by a wide AlxGa1-xAs parabolic quantum well. A minimum is found in the magnetoplasma dispersion relation, indicating the existence of a magnetoroton excitation for wave vector q about twice the inverse magnetic length. Calculations of the dispersion relation within the single-mode approximation are in good qualitative agreement with the measurements.

引用

页码：3428 / 3431

页数：4

共 20 条

[1] DIMENSIONAL EXCITATIONS IN NARROW ELECTRON INVERSION CHANNELS ON SI [J].