Chemical reactivity of Ni-Rh nanowires.
The properties of bimetallic Ni-Rh nanowires, fabricated by decorating the steps of vicinal Rh(111) surfaces by stripes of self-assembled Ni adatoms, have been probed by STM, photoemission, and ab initio density functional theory calculations. These Ni-Rh nanowires have specific electronic properties that lead to a significantly enhanced chemical reactivity towards oxygen. As a result, the Ni-Rh nanowires can be oxidized exclusively, generating novel quasi-one-dimensional oxide structures.
Schoiswohl
J
J
Institute of Physics, Surface and Interface Physics, Karl-Franzens University Graz, A-8010 Graz, Austria.
Mittendorfer
F
F
Surnev
S
S
Ramsey
M G
MG
Andersen
J N
JN
Netzer
F P
FP