Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM

M. Šnábl; M. Ondřejček; V. Cháb; W. Stenzel; H. Conrad; A. M. Bradshaw

doi:10.1016/0039-6028(95)01189-7

Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM

M. Šnábl, M. Ondřejček, V. Cháb, W. Stenzel, H. Conrad, A. M. Bradshaw

Research output: Contribution to journal › Article › peer-review

Abstract

The surface diffusion of potassium on Pd{111} has been studied in real time as a function of temperature between 100 and 190 K in the limit of zero concentration (Θ < 0.05 ML) using photoelectron emission microscopy (PEEM). Very fast migration of K atoms was observed on flat, quasi-one-dimensional regions of the surface between the step bunches. The temperature dependence of the diffusion coefficient indicates an activated process with an energy barrier of 66 ± 11 meV.

Original language	English (US)
Pages (from-to)	546-551
Number of pages	6
Journal	Surface Science
Volume	352-354
DOIs	https://doi.org/10.1016/0039-6028(95)01189-7
State	Published - May 15 1996
Externally published	Yes

Keywords

Alkali metals
Diffusion and migration
Electron microscopy
Low index single crystal surfaces
Palladium
Surface diffusion

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Online availability

10.1016/0039-6028(95)01189-7

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title = "Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM",

abstract = "The surface diffusion of potassium on Pd{111} has been studied in real time as a function of temperature between 100 and 190 K in the limit of zero concentration (Θ < 0.05 ML) using photoelectron emission microscopy (PEEM). Very fast migration of K atoms was observed on flat, quasi-one-dimensional regions of the surface between the step bunches. The temperature dependence of the diffusion coefficient indicates an activated process with an energy barrier of 66 ± 11 meV.",

keywords = "Alkali metals, Diffusion and migration, Electron microscopy, Low index single crystal surfaces, Palladium, Surface diffusion",

author = "M. {\v S}n{\'a}bl and M. Ond{\v r}ej{\v c}ek and V. Ch{\'a}b and W. Stenzel and H. Conrad and Bradshaw, {A. M.}",

note = "Funding Information: M.O. and M.S. would like to thank the Max-Planck-Gesellschafoftr studentshipsT.h e work has been supportebd y the DeutscheF orschungsgemein-schaftt hrought he Sonderforschungsbere2i9c0h and by the Grant Agency of the Czech Republicu nder the grantG A CR #202/94/1801.",

year = "1996",

month = may,

day = "15",

doi = "10.1016/0039-6028(95)01189-7",

language = "English (US)",

volume = "352-354",

pages = "546--551",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

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TY - JOUR

T1 - Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM

AU - Šnábl, M.

AU - Ondřejček, M.

AU - Cháb, V.

AU - Stenzel, W.

AU - Conrad, H.

AU - Bradshaw, A. M.

N1 - Funding Information: M.O. and M.S. would like to thank the Max-Planck-Gesellschafoftr studentshipsT.h e work has been supportebd y the DeutscheF orschungsgemein-schaftt hrought he Sonderforschungsbere2i9c0h and by the Grant Agency of the Czech Republicu nder the grantG A CR #202/94/1801.

PY - 1996/5/15

Y1 - 1996/5/15

N2 - The surface diffusion of potassium on Pd{111} has been studied in real time as a function of temperature between 100 and 190 K in the limit of zero concentration (Θ < 0.05 ML) using photoelectron emission microscopy (PEEM). Very fast migration of K atoms was observed on flat, quasi-one-dimensional regions of the surface between the step bunches. The temperature dependence of the diffusion coefficient indicates an activated process with an energy barrier of 66 ± 11 meV.

AB - The surface diffusion of potassium on Pd{111} has been studied in real time as a function of temperature between 100 and 190 K in the limit of zero concentration (Θ < 0.05 ML) using photoelectron emission microscopy (PEEM). Very fast migration of K atoms was observed on flat, quasi-one-dimensional regions of the surface between the step bunches. The temperature dependence of the diffusion coefficient indicates an activated process with an energy barrier of 66 ± 11 meV.

KW - Alkali metals

KW - Diffusion and migration

KW - Electron microscopy

KW - Low index single crystal surfaces

KW - Palladium

KW - Surface diffusion

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UR - http://www.scopus.com/inward/citedby.url?scp=0030141691&partnerID=8YFLogxK

U2 - 10.1016/0039-6028(95)01189-7

DO - 10.1016/0039-6028(95)01189-7

M3 - Article

AN - SCOPUS:0030141691

SN - 0039-6028

VL - 352-354

SP - 546

EP - 551

JO - Surface Science

JF - Surface Science

ER -

Temperature dependence of the surface diffusion coefficient of K atoms on Pd{111} measured with PEEM

Abstract

Keywords

ASJC Scopus subject areas

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