Regensburg 2016 – scientific programme
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O: Fachverband Oberflächenphysik
O 42: Plasmonics and Nanooptics III: Infrared Microscopy
O 42.8: Talk
Tuesday, March 8, 2016, 15:45–16:00, H4
Terahertz responses of a metal with sub-nm gap — •tae yun kim1, sang jun park1, dai-sik kim2, and cheol-hwan park1 — 1Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 08826, Korea — 2Center for Atomic Scale Electromagnetism and Department of Physics, Seoul National University, Seoul 08826, Korea
Recent developments have shown that the characteristic length scale of a plasmonic system can reach a few angstroms. In a recent experiment, it was observed that the tunneling of electrons through quantum barriers can restrict the funneling of terahertz waves through sub-nm gaps in the extremely non-linear, high-intensity regime [1]. In this contribution, we calculate and discuss the responses of a metal with sub-nm gaps in the terahertz regime further based on a recent theoretical study [2].
[1] Young-Mi Bahk, Bong Joo Kang, Yong Seung Kim, Joon-Yeon Kim, Won Tae Kim, Tae Yun Kim, Taehee Kang, Jiyeah Rhie, Sanghoon Han, Cheol-Hwan Park, Fabian Rotermund, and Dai-Sik Kim, Phys. Rev. Lett. 115, 125501 (2015).
[2] Sang Jun Park, Tae Yun Kim, Cheol-Hwan Park, and Dai-Sik Kim, unpublished.