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Image potential eigenstates and resonances on the (110) surfaces of noble metals: Energies and lifetimes

AutorTsirkin, S. S.; Chulkov, Eugene V.
Fecha de publicación2014
EditorSpringer
CitaciónJournal of Experimental and Theoretical Physics 118(2): 167-175 (2014)
ResumenThe energies and lifetimes of the image potential resonances at the ̄Y point on the Cu(110), Ag(110), and Au(110) surfaces are studied, and the energies of the image potential states on the Pd(110) surface are analyzed. It is shown that every quantum number n corresponds to a pair of image potential states (resonances) n+ and n - at the ̄Y point. The average energy of a pair of eigenstates (resonances) at n ≥ 2 is well described by the formula Ēn = (E n+ + E n-) = E 0 - (0.85 eV)/(n + δ)2, where δ is the quantum defect, E 0 = (1/2m e )(Latin small letter h with strokeπ/a)2, and a is the lattice parameter. The splitting energy of a pair of eigenstates (resonances) obeys the law ΔE n = E n+ - E n- ∝ n -3. The lifetimes τn± of image potential resonances are proportional to n 3. © 2014 Pleiades Publishing, Inc.
URIhttp://hdl.handle.net/10261/102615
DOI10.1134/S1063776114010191
Identificadoresdoi: 10.1134/S1063776114010191
issn: 1063-7761
e-issn: 1090-6509
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