Variation of the surface optical properties of silver crystals with vacuum-annealing and argon-ion bombardment

Fromhold, A. T.

doi:10.1007/bf02750033

Nuovo Cim

1963

DOI: 10.1007/bf02750033

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Variation of the surface optical properties of silver crystals with vacuum-annealing and argon-ion bombardment

A. T. Fromhold

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1965

1977

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Cited by 5 publications

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“…For metals, it is usually the latter, the inverse of the absorption coefficient, 100 a, The interface may be further complicated by an overlayer that is not continuous, or by a rough surface. In a number of cases, attempts to anneal the surface to remove damage from surface preparation leads to increased surface roughness [25], both representing departures from the mathematical interface supposedly under study. It is entirely possible that the surface roughness be on a wavelength scale, leading to resonant scattering effects .…”

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Optical Constants and Their Measurement

Lynch

1977

J. Phys. Colloques

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R6sum6. -Nous exposons dans ses lignes gknkrales la mkthode de la fonction diklectrique et ses limites dans la description des propriktks optiques des solides, en particulier des mktaux. Nous dkcrivons aussi des methodes pour deduire cette fonction a partir des expkriences. Nous soulignons I'importance d'erreurs dkrivant de la prkparation des kchantillons plutbt que de la technique de mesure. On discute les donnkes expkrimentales pour diffkrents Clkments mktalliques.Abstract. -A description of the optical properties of solids, especially metals, in terms of a dielectric function is outlined, along with some of its limitations. Methods of deriving this function from measurements are outlined as well. Errors due to sample preparation, rather than measurement errors, are emphasized. Experimental data for several elemental metals is discussed.1. Introduction. -We review the description of the optical properties of solids in terms of a dielectric function, indicating some of the limitations to such a description. Most of the limitations to be discussed are more likely to be encountered in metals than in semiconductors or insulators, and metals are of greater interest in photoelectrochemistry, so the subsequent discussion and examples will be limited to metals. We outline briefly a microscopic model for the dielectric function which illustrates some other general properties of dielectric functions (which, however, are modelindependent). We then outline general methods for obtaining dielectric functions from experimental data, discussing experimental errors, conceptual errors, and problems with sample preparation. Several sets of data will then be examined. by while the linear response of a similarly simplifiedconductor is characterized by a conductivity a, defined 4 nIf the electric field is time-dependent, the response generally will not be instantaneous, so that we must use In crystalline media the dielectric function becomes a symmetric Cartesian tensor which can be diagonalized by a suitable choice of axes. For cubic crystals, all three diagonal components are equal and tensor notaArticle published online by EDP Sciences and available at http://dx

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confidence: 99%

Optical Constants and Their Measurement

Lynch

1977

J. Phys. Colloques

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Measurement of the optical properties of alloys in ultra-high vacuum

Pells¹

1967

J. Sci. Instrum.

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Photoemission Studies of Indium

Koyama

Spicer

1971

Phys. Rev. B

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Variation of the surface optical properties of silver crystals with vacuum-annealing and argon-ion bombardment

Cited by 5 publications

References 8 publications

Optical Constants and Their Measurement

Optical Constants and Their Measurement

Measurement of the optical properties of alloys in ultra-high vacuum

Photoemission Studies of Indium

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