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Excitation of Surface Plasmons by Inelastic Electron Tunneling

Research output: Contribution to journalReview articlepeer-review

Lufang Liu, Yue Xu, Jiajie Zhu, Pan Wang, Limin Tong, Alexey V. Krasavin

Original languageEnglish
Article number251
JournalFrontiers in Physics
Published6 Aug 2020

King's Authors


Surface plasmons are usually excited by diffraction-limited optical methods with the use of bulky optical components, which greatly limits the miniaturization and chip-scale high-density integration of plasmonic devices. By integrating a plasmonic nanostructure with a tunnel junction, plasmonic modes in the nanostructure can be directly excited by low-energy tunneling electrons with the advantages including an ultra-small footprint and an ultra-fast speed. In this mini-review, recent progress in the electric excitation of localized and propagating surface plasmons by inelastic electron tunneling is overviewed.

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