TY - JOUR
T1 - Interaction of N2 with Fe covered Re(0001)
AU - Haase, G.
AU - Asscher, M.
AU - Linke, U.
PY - 1988/10
Y1 - 1988/10
N2 - The effect of Fe overlayers on the molecular adsorption and dissociation of N2 on Re(0001) was studied under ultra-high vacuum (UHV) conditions. It was found that above 0.25 ML Fe, a new molecular site is stabilized, having a binding energy of 28 kJ/mol. Preferential blocking of this site by CO preadsorption indicates that it does not lead to dissociation. A small enhancement of the N2 dissociation probability is observed above 0.5 ML Fe. A decrease in the dissociation probability at iron coverages lower than 0.12 ML is consistent with substrate defects that are blocked by the iron adatoms. A monotonous decrease of the metal's work function with iron coverage is observed reaching a value of 0.26±0.02 eV at 2 ML Fe, below the value of a clean surface.
AB - The effect of Fe overlayers on the molecular adsorption and dissociation of N2 on Re(0001) was studied under ultra-high vacuum (UHV) conditions. It was found that above 0.25 ML Fe, a new molecular site is stabilized, having a binding energy of 28 kJ/mol. Preferential blocking of this site by CO preadsorption indicates that it does not lead to dissociation. A small enhancement of the N2 dissociation probability is observed above 0.5 ML Fe. A decrease in the dissociation probability at iron coverages lower than 0.12 ML is consistent with substrate defects that are blocked by the iron adatoms. A monotonous decrease of the metal's work function with iron coverage is observed reaching a value of 0.26±0.02 eV at 2 ML Fe, below the value of a clean surface.
UR - http://www.scopus.com/inward/record.url?scp=0024090270&partnerID=8YFLogxK
U2 - 10.1016/0169-4332(88)90032-3
DO - 10.1016/0169-4332(88)90032-3
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AN - SCOPUS:0024090270
SN - 0169-4332
VL - 35
SP - 1
EP - 9
JO - Applied Surface Science
JF - Applied Surface Science
IS - 1
ER -