Probing subwavelength in-plane anisotropy with antenna-assisted infrared nano-spectroscopy

oleh: Ziheng Yao, Xinzhong Chen, Lukas Wehmeier, Suheng Xu, Yinming Shao, Zimeng Zeng, Fanwei Liu, Alexander S. Mcleod, Stephanie N. Gilbert Corder, Makoto Tsuneto, Wu Shi, Zihang Wang, Wenjun Zheng, Hans A. Bechtel, G. L. Carr, Michael C. Martin, Alex Zettl, D. N. Basov, Xi Chen, Lukas M. Eng, Susanne C. Kehr, Mengkun Liu

Format: Article
Diterbitkan: Nature Portfolio 2021-05-01

Deskripsi

s-SNOM is a powerful tool, but it is less sensitive to in-plane variations. Here the authors present a method to improve this with a metallic microdisk antenna, which they demonstrate by probing in-plane phonon responses.