Diatomic Molecular Switches to Enable the Observation of Very-Low-Energy Vibrations. Pivetta, M., Ternes, M., Patthey, F., & Schneider, W. Physical Review Letters, 99(12):126104, September, 2007.
Diatomic Molecular Switches to Enable the Observation of Very-Low-Energy Vibrations [link]Paper  doi  abstract   bibtex   
Using low-temperature scanning tunneling microscopy and spectroscopy, we found that the coadsorption of atomic hydrogen to single transition-metal and rare-earth-metal atoms on a Ag(100) surface gives rise to surprising phenomena, a bias dependent switching from a large to a small apparent size of the diatomic molecules and a concomitant appearance of very low-energy vibrational features of 3 to 7 meV in the differential conductance spectra. These phenomena, which have until now escaped observation, may be of general relevance for low-temperature adsorption.
@article{pivetta_diatomic_2007,
	title = {Diatomic {Molecular} {Switches} to {Enable} the {Observation} of {Very}-{Low}-{Energy} {Vibrations}},
	volume = {99},
	url = {http://link.aps.org/doi/10.1103/PhysRevLett.99.126104},
	doi = {10.1103/PhysRevLett.99.126104},
	abstract = {Using low-temperature scanning tunneling microscopy and spectroscopy, we found that the coadsorption of atomic hydrogen to single transition-metal and rare-earth-metal atoms on a Ag(100) surface gives rise to surprising phenomena, a bias dependent switching from a large to a small apparent size of the diatomic molecules and a concomitant appearance of very low-energy vibrational features of 3 to 7 meV in the differential conductance spectra. These phenomena, which have until now escaped observation, may be of general relevance for low-temperature adsorption.},
	number = {12},
	urldate = {2014-03-31},
	journal = {Physical Review Letters},
	author = {Pivetta, Marina and Ternes, Markus and Patthey, François and Schneider, Wolf-Dieter},
	month = sep,
	year = {2007},
	pages = {126104},
}

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