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

作者: M Kamaratos , C.A Papageorgopoulos , D.C Papageorgopoulos , D Tonti , C Pettenkofer

DOI: 10.1016/S0169-4332(99)00091-4

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摘要: Abstract The adsorption of Li and Na, separately, on Cs-intercalated TaSe 2 (0001) was studied in this work. investigation took place UHV by soft X-ray photoelectron spectroscopy (XPS) using synchrotron radiation as excitation source. intercalation occurred across the Van der Waals planes deposition basal plane layer compound. Lithium sodium deposited separately cause a diffusion Cs towards surface. deintercalation is more drastic than that Na. This phenomenon guided repulsive alkali–alkali electrostatic interaction it related to thermodynamic kinetic effects which have been described paper.

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