title: THz-Pulse-Induced Selective Catalytic CO Oxidation on Ru.
abstract: We demonstrate the use of intense, quasi-half-cycle THz pulses, with an associated electric field component comparable to intramolecular electric fields, to direct the reaction coordinate of a chemical reaction by stimulating the nuclear motions of the reactants. Using a strong electric field from a THz pulse generated via coherent transition radiation from an ultrashort electron bunch, we present evidence that CO oxidation on Ru(0001) is selectively induced, while not promoting the thermally induced CO desorption process. The reaction is initiated by the motion of the O atoms on the surface driven by the electric field component of the THz pulse, rather than thermal heating of the surface.
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: Jerry L
authors.initials: JL
authors.lastname: LaRue
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Katayama
authors.affiliation: Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|SIMES Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA.
authors.forename: Aaron
authors.initials: A
authors.lastname: Lindenberg
authors.affiliation: Accelerator Directorate, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: Alan S
authors.initials: AS
authors.lastname: Fisher
authors.affiliation: Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
authors.forename: Henrik
authors.initials: H
authors.lastname: Öström
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Department of Physics, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden.
authors.forename: Anders
authors.initials: A
authors.lastname: Nilsson
authors.affiliation: SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.|Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
authors.forename: Hirohito
authors.initials: H
authors.lastname: Ogasawara