TY - JOUR
T1 - Linear sliding friction
T2 - On the origin of the microscopic friction for Xe on silver
AU - Persson, B. N.J.
AU - Nitzan, A.
PY - 1996/12/1
Y1 - 1996/12/1
N2 - We have performed a computer simulation study of the force required to slide xenon monolayer and bilayers on a silver surface. With information about the adsorbate-substrate interaction potential deduced from experimental data, we find that for the compressed incommensurate monolayer film the observed sliding friction is very close to the parallel microscopic friction which acts on the individual adsorbates, which is of mainly electronic origin. For the bilayer film a small fraction of the observed sliding friction may arise from internal excitations in the film, and the rest from the direct energy transfer to the substrate via the electronic friction.
AB - We have performed a computer simulation study of the force required to slide xenon monolayer and bilayers on a silver surface. With information about the adsorbate-substrate interaction potential deduced from experimental data, we find that for the compressed incommensurate monolayer film the observed sliding friction is very close to the parallel microscopic friction which acts on the individual adsorbates, which is of mainly electronic origin. For the bilayer film a small fraction of the observed sliding friction may arise from internal excitations in the film, and the rest from the direct energy transfer to the substrate via the electronic friction.
KW - Atomistic dynamics
KW - Computer simulations
KW - Friction
KW - Models of non-equilibrium phenomena
UR - http://www.scopus.com/inward/record.url?scp=0030406268&partnerID=8YFLogxK
U2 - 10.1016/S0039-6028(96)00814-X
DO - 10.1016/S0039-6028(96)00814-X
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AN - SCOPUS:0030406268
SN - 0039-6028
VL - 367
SP - 261
EP - 275
JO - Surface Science
JF - Surface Science
IS - 3
ER -