OBSERVATION OF MAGNETOPLASMONS, ROTONS, AND SPIN-FLIP EXCITATIONS IN GAAS QUANTUM WIRES

被引：70

作者：

GONI, AR ^{[1
]}

PINCZUK, A ^{[1
]}

WEINER, JS ^{[1
]}

DENNIS, BS ^{[1
]}

PFEIFFER, LN ^{[1
]}

WEST, KW ^{[1
]}

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.70.1151

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic light scattering spectra of the one-dimensional electron gas in GaAs quantum wires embedded in a strong perpendicular magnetic field show long-wavelength collective excitations and display multiple structures that indicate the magnetoroton density of states. The observed shift of the q is similar to 0 intersubband magnetoplasmons from the cyclotron frequency is the signature of 1D behavior. At low temperatures spin polarization of the 1D system is revealed by the exchange enhancement of spin-flip excitations.

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页码：1151 / 1154

页数：4

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