Work function calculation of solid solution alloys using the image force model

TY - JOUR

T1 - Work function calculation of solid solution alloys using the image force model

AU - Rothschild, Jonathan Avner

AU - Eizenberg, Moshe

PY - 2010/6/3

Y1 - 2010/6/3

N2 - The electronic work function of polycrystalline solid solution alloys is being analytically calculated using three different approaches. All approaches are derived by assuming that the alloys are in equilibrium and therefore surface segregation causes a difference between the surface composition and the bulk composition. An approach based on the image force, an approach based on the dipole layer formed due to electronegativity differences, and a simple surface concentration approach are compared to published experimental results. The image force model has a good agreement with the experiments, while the dipole-layer approach has a poor agreement, challenging the conventional concept of the double layer.

AB - The electronic work function of polycrystalline solid solution alloys is being analytically calculated using three different approaches. All approaches are derived by assuming that the alloys are in equilibrium and therefore surface segregation causes a difference between the surface composition and the bulk composition. An approach based on the image force, an approach based on the dipole layer formed due to electronegativity differences, and a simple surface concentration approach are compared to published experimental results. The image force model has a good agreement with the experiments, while the dipole-layer approach has a poor agreement, challenging the conventional concept of the double layer.

UR - http://www.scopus.com/inward/record.url?scp=77956326594&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.81.224201

DO - 10.1103/PhysRevB.81.224201

M3 - 文章

AN - SCOPUS:77956326594

VL - 81

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 22

M1 - 224201

ER -