New collective modes in wide quantum wells with in-plane magnetic fields

Shun-Jen Cheng; Rolf R. Gerhardts

doi:10.1016/S1386-9477(01)00470-2

New collective modes in wide quantum wells with in-plane magnetic fields

Shun-Jen Cheng^*, Rolf R. Gerhardts

^*Corresponding author for this work

Department of Electrophysics

Research output: Contribution to journal › Conference article › peer-review

Abstract

The collective excitations of symmetric wide quantum wells under in-plane magnetic fields were investigated using random phase approximation (RPA) method. A high in-plane magnetic field induces an additional branch of undamped acoustic-like plasmons, which does not exist in single quantum wells without in-plane magnetic fields. It is found that the in-plane magnetic field affects the frequencies, (an-)isotropy and types of the plasmon modes.

Original language	English
Pages (from-to)	554-557
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	12
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(01)00470-2
State	Published - 1 Jan 2002
Event	14th International Conference on the - Prague, Czech Republic Duration: 30 Jul 2001 → 3 Aug 2001

Keywords

Collective excitations
In-plane magnetic fields
Plasmons
Quantum wells

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abstract = "The collective excitations of symmetric wide quantum wells under in-plane magnetic fields were investigated using random phase approximation (RPA) method. A high in-plane magnetic field induces an additional branch of undamped acoustic-like plasmons, which does not exist in single quantum wells without in-plane magnetic fields. It is found that the in-plane magnetic field affects the frequencies, (an-)isotropy and types of the plasmon modes.",

keywords = "Collective excitations, In-plane magnetic fields, Plasmons, Quantum wells",

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AU - Gerhardts, Rolf R.

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N2 - The collective excitations of symmetric wide quantum wells under in-plane magnetic fields were investigated using random phase approximation (RPA) method. A high in-plane magnetic field induces an additional branch of undamped acoustic-like plasmons, which does not exist in single quantum wells without in-plane magnetic fields. It is found that the in-plane magnetic field affects the frequencies, (an-)isotropy and types of the plasmon modes.

AB - The collective excitations of symmetric wide quantum wells under in-plane magnetic fields were investigated using random phase approximation (RPA) method. A high in-plane magnetic field induces an additional branch of undamped acoustic-like plasmons, which does not exist in single quantum wells without in-plane magnetic fields. It is found that the in-plane magnetic field affects the frequencies, (an-)isotropy and types of the plasmon modes.

KW - Collective excitations

KW - In-plane magnetic fields

KW - Plasmons

KW - Quantum wells

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DO - 10.1016/S1386-9477(01)00470-2

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JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

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