Authors: Cancan Lou, Yurou Guan, Xingxia Cui, Yafei Li, Xieyu Zhou, Qing Yuan, Guangqiang Mei, Chengxiang Jiao, Kai Huang, Xuefeng Hou, Limin Cao, Wei Ji, Dino Novko, Hrvoje Petek, Min Feng
Published: 2024-10-23
Source: Full article
Scanning tunneling microscopy (STM) vibronic spectroscopy, which has provided submolecular insights into electron-vibration (vibronic) coupling, faces challenges when probing the pivotal low-frequency vibronic excitations. Because of eigenstate broadening on solid substrates, resolving low-frequency vibronic states demands strong decoupling. This work designs a type II band alignment in STM junction to achieve effective charge-transfer state decoupling. This strategy enables the successful identification of the lowest-frequency H