TY - JOUR
T1 - Image-potential-induced surface bands in insulators
AU - Cole, Milton W.
AU - Cohen, Morrel H.
PY - 1969
Y1 - 1969
N2 - We find that whenever the bottom of the conduction band of an insulator lies at positive energy, the image potential gives rise to bands of surface states. We present lower limits for binding energies of electrons to the surface of liquid and solid He3, He4, Ne, H2, and D2. Interaction between electrons and surface phonons (solids) or ripplons (liquids) increases the binding. We argue that these states may have in fact been observed in liquid He4.
AB - We find that whenever the bottom of the conduction band of an insulator lies at positive energy, the image potential gives rise to bands of surface states. We present lower limits for binding energies of electrons to the surface of liquid and solid He3, He4, Ne, H2, and D2. Interaction between electrons and surface phonons (solids) or ripplons (liquids) increases the binding. We argue that these states may have in fact been observed in liquid He4.
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U2 - 10.1103/PhysRevLett.23.1238
DO - 10.1103/PhysRevLett.23.1238
M3 - Article
AN - SCOPUS:0014607817
SN - 0031-9007
VL - 23
SP - 1238
EP - 1241
JO - Physical review letters
JF - Physical review letters
IS - 21
ER -