[17a-S4_201-1~13] 6.6 Probe Microscopy

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[17a-S4_201-8] Estimation of circularly polarized luminescent plasmons obtained by STM-induced luminescence

〇Takuma Hattori¹, Taisei Haruna¹, Ryu Shigehisa¹, Shota Matsura², Akira Saito¹, Hideji Osuga², Yuji Kuwahara¹ (1.Univ. of Osaka, 2.Wakayama Univ.)

Keywords:

scanning tunnel microscopy,circular luminescence,luminescence by tunneling current

Chirality at the single-molecule level has been evaluated by measuring circularly polarized emission using tunneling current induced luminescence in a scanning tunneling microscopy. On the other hand, it has been experimentally demonstrated that plasmonic emission exhibits optical asymmetry even in the absence of molecules. However, the origin of this asymmetry has remained unclear. In this study, we investigated this origin using the finite-difference time-domain method. In particular, we revealed that the optical asymmetry is strongly dependent on the geometry of the probe apex.