Cesium deintercalation by Li or Na deposited on 1T-TaSe2 (0001) surfaces

Authors
Kamaratos, M Papageorgopoulos, CA Papageorgopoulos, DC Tonti, D Pettenkofer, C Jaegermann, W
Citation
M. Kamaratos et al., Cesium deintercalation by Li or Na deposited on 1T-TaSe2 (0001) surfaces, APPL SURF S, 147(1-4), 1999, pp. 101-106
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
147
Issue
1-4
Year of publication
1999
Pages
101 - 106
Database
ISI
SICI code
0169-4332(199905)147:1-4<101:CDBLON>2.0.ZU;2-I
Abstract
The adsorption of Li and Na, separately, on Cs-intercalated TaSe2(0001) was studied in this work. The investigation took place in UHV by soft X-ray ph otoelectron spectroscopy (XPS) using synchrotron radiation as excitation so urce. The intercalation occurred across the Van der Waals planes by deposit ion on the basal plane of the layer compound. Lithium and sodium deposited separately on Cs-intercalated TaSe2, cause a diffusion of Cs towards the su rface. The deintercalation of Cs is more drastic by Li than that by Na. Thi s phenomenon is guided by a repulsive alkali-alkali electrostatic interacti on and it is related to the thermodynamic and kinetic effects which have be en described in this paper. (C) 1999 Elsevier Science B.V. All rights reser ved.