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

Cheng, S. J.; Gerhardts, R. R.

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

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Cheng, S. J.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Gerhardts, R. R.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Cheng, S. J., & Gerhardts, R. R. (2002). New collective modes in wide quantum wells with in-plane magnetic fields. Physica E, 12(1-4), 554-557.

Cite as: https://hdl.handle.net/21.11116/0000-000E-EC63-9

Abstract

We theoretically investigate, within the random phase
approximation. the collective excitations of symmetric wide
quantum Wells under in-plane magnetic fields B-parallel to. We
find that the B-parallel to, field significantly affects the
frequencies, (an-)isotropy and types of the ptasmon modes. In
particular. a high B-\ can induce an additional branch of
undamped acoustic-like plasmons, which does not exist in single
quantum wells without B-parallel to. (C) 2002 Elsevier Science
B.V. All rights reserved.