Speaker
Akitoshi Shiotari
(Department of Physical Chemistry, Fritz-Haber Institute)
Description
We report on tip-enhanced Raman spectroscopy (TERS) of H$_2$ and D$_2$ molecules physisorbed on Ag(111) at cryogenic temperatures (around 10 K). The intense Raman peaks resulting from the rotational and vibrational transitions are observed at sub-nanometer gap distances of the junction formed by a Ag tip and the Ag surface. Our results suggest that TERS based on low-temperature scanning tunneling microscopy (STM) can be applied to weakly bound physisorbed molecules and is capable of studying subtle interactions within plasmonic picocavities.
Primary author
Akitoshi Shiotari
(Department of Physical Chemistry, Fritz-Haber Institute)
Co-authors
Adnan Hammud
(FHI of the Max Planck Society)
Dr
George Trenins
(Max-Planck-Institute for Structure and Dynamics of Matter)
Prof.
Jun Yoshinobu
(ISSP, Univ. of Tokyo)
Dr
Mariana Rossi
(Max-Planck-Institute for Structure and Dynamics of Matter)
Martin Wolf
Prof.
Shuyi Liu
(Huazhong University of Science and Technology)
Prof.
Takashi Kumagai
(Institute for Molecular Science)
Prof.
Toshiki Sugimoto
(Institute for Molecular Science)
