Thermal effects on the work function of cesium adlayers and order-disorder transitions

Desplat, J.‐L.

doi:10.1016/0039-6028(81)90495-7

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…Effects of a depolarization field on adsorbate-adsorbate interactions have been discussed by several authors [2,17]. Assuming the adsorbate as a polarizable entity with a coverage dependent dipole moment µ(θ) and a constant polarizability α, and using the Topping model, it can be shown that…”

Section: Calculation Of the Dipole Moment And Work Functionmentioning

confidence: 99%

“…On the other hand the variation of work function with coverage, φ(θ ), can be obtained in terms of µ(θ) through the Helmholtz equation [1,2] and the Topping model as…”

Section: Calculation Of the Dipole Moment And Work Functionmentioning

confidence: 99%

“…Adsorption of alkali atoms on transition metals has been intensively studied [1][2][3][4][5][6][7][8][9][10][11] due to important applications of these systems such as the preparation of low-work-function cathodes and the promotion of heterogeneous catalytic reactions. The surface structure of these systems has been discussed in detail and they have been related to work function and thermal desorption measurements.…”

Section: Introductionmentioning

confidence: 99%

“…The study of the electronic structure and chemical bonding, on one hand, has revealed that the alkali ions and their classic image charges induced in the substrate form a dipolar layer whose dipole moment variation with coverage has been explained using a reciprocal depolarization field in a Topping model formalism [1,2]. The dipolar surface provides the explanation of the observed reduction of the work function with coverage.…”

Section: Introductionmentioning

confidence: 99%

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Desorption kinetics of alkali atoms from transition metals

Uñac

Sales

Gargiulo

et al. 1997

J. Phys.: Condens. Matter

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A model for the adsorption of alkali atoms on transition metals is proposed and thermal desorption spectra are analysed for the systems K/Ni(111), K/Pt(111) and K/Fe(111). The basic assumption is that the interaction energy between alkali atoms, being of dipole - dipole type, attenuates as coverage increases. The attenuation function, obtained by fitting experimental thermal desorption spectra, is used to calculate the variation with coverage of the dipole moment and the work function through the Topping model. These calculations show an excellent agreement with independent experimental measurements of the dipole moment and work function over the whole coverage range.

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Section: Calculation Of the Dipole Moment And Work Functionmentioning

confidence: 99%

“…On the other hand the variation of work function with coverage, φ(θ ), can be obtained in terms of µ(θ) through the Helmholtz equation [1,2] and the Topping model as…”

Section: Calculation Of the Dipole Moment And Work Functionmentioning

confidence: 99%