Abstract
We study the interaction of low-energy electrons with crystalline ice () on Cu(111) by low-temperature scanning tunneling microscopy and spectroscopy. Electrons induce dissociation of the molecules with a threshold of . The large dissociation yield of the order of and the extended area of dissociation are attributed to a shift in conduction band during the dissociation. Voltage dependent differences in imaging of ice and dissociated ice are reflected in the spectroscopic signature.
- Received 16 July 2008
DOI:https://doi.org/10.1103/PhysRevLett.101.196101
©2008 American Physical Society