Manipulation of tunneling frequencies using magnetic fields for resonant tunneling effects of surface plasmons

Yung-Chiang Lan, Yun Chorng Chang, Peng Hsiao Lee

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

This work investigates the manipulation of terahertz surface plasmons (SPs) on a semiconductor surface by applying an external static magnetic field. The dispersion relations of the coupled surface magnetoplasmon under the Voigt configuration in the semiconductor-insulator-semiconductor structure are derived. For a TM-polarized wave that is normally incident onto a semiconductor film with periodic narrow grooves on both surfaces, the applied external static magnetic field with the Voigt configuration redshifts the frequencies of the SP-induced resonant tunneling. This phenomenon is attributable to the reduction in the effective plasma frequency by the applied magnetic field.

Original languageEnglish
Article number171114
JournalApplied Physics Letters
Volume90
Issue number17
DOIs
Publication statusPublished - 2007 May 21

Fingerprint

resonant tunneling
plasmons
manipulators
magnetic fields
SIS (semiconductors)
plasma frequencies
configurations
grooves

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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Manipulation of tunneling frequencies using magnetic fields for resonant tunneling effects of surface plasmons. / Lan, Yung-Chiang; Chang, Yun Chorng; Lee, Peng Hsiao.

In: Applied Physics Letters, Vol. 90, No. 17, 171114, 21.05.2007.

Research output: Contribution to journalArticle

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AB - This work investigates the manipulation of terahertz surface plasmons (SPs) on a semiconductor surface by applying an external static magnetic field. The dispersion relations of the coupled surface magnetoplasmon under the Voigt configuration in the semiconductor-insulator-semiconductor structure are derived. For a TM-polarized wave that is normally incident onto a semiconductor film with periodic narrow grooves on both surfaces, the applied external static magnetic field with the Voigt configuration redshifts the frequencies of the SP-induced resonant tunneling. This phenomenon is attributable to the reduction in the effective plasma frequency by the applied magnetic field.

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