Dipole forbidden vibrational modes for NO and CO on Cu observed in the far IR

Conference · Mon Nov 01 04:00:00 EST 1993

OSTI ID:10194880

Hirschmugl, C J ^[1]; Dumas, P; Suhren, M ^[2]; Chabal, Y J ^[3]; Hoffmann, F M ^[4]; Williams, G P ^[1]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Centre Universitaire Paris-Sud, Orsay (France)
3. AT&T Bell Labs., Murray Hill, NJ (United States)
4. Exxon Research & Engineering, Annandale, NJ (United States). Corporate Research Labs.

IRRAS spectra of NO/Cu(111) and ({radical}3 {times} {radical}3)R30{degrees} coverage of CO/Cu(111) in the range 3000--180 cm{sup {minus}1} show both the adsorbate internal modes and features assigned to the hindered rotational modes. These dipole-forbidden features are characterized by asymmetric (mostly negative) absorption lineshapes and are accompanied by a change in broadband absorption. The shape and intensity of this broadband absorption is well accounted for by a scattering model.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10194880
• Report Number(s): BNL--49557; CONF-9306281--1; ON: DE94003199
• Country of Publication: United States
• Language: English

Related Subjects

665000
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
CARBON MONOXIDE
COPPER
FAR INFRARED RADIATION
FORBIDDEN TRANSITIONS
GAS CONDENSATES
MONOCRYSTALS
NITROGEN OXIDES
OSCILLATION MODES
PHYSICS OF CONDENSED MATTER
VIBRATIONAL STATES