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Thermally induced phase transition in the Cs/Al(111) system Cs/Al(111)体系的热诱导相变
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91014-F
H. Kondoh, H. Nozoye
{"title":"Thermally induced phase transition in the Cs/Al(111) system","authors":"H. Kondoh,&nbsp;H. Nozoye","doi":"10.1016/0167-2584(93)91014-F","DOIUrl":"https://doi.org/10.1016/0167-2584(93)91014-F","url":null,"abstract":"<div><p>The adsorption of Cs on Al(111) has been studied by electron energy loss spectroscopy (EELS) and low energy electron diffraction (LEED). Two series of Cs overlayers with various coverages were prepared by two methods; as-deposition at 85 K (AD series) and thermally desorbing excess Cs (TD series). We find an abrupt change of EEL spectra for the TD series at a coverage of approximately 0.5; the nature of a Cs-induced loss peak changes from a surface plasmon to a Cs 6s → 6p like excitation, which is indicative of a metallic-to-ionic change. This transition is associated with a simultaneous structural transformation. Both EELS and LEED for the TD series are different from those for the AD series at the coverages between ca. 0.5 and 0.2. Irreversible structural and electronic transformations from the AD to the TD series also occur at these coverages by heating above 200 K without desorbing Cs. This indicates that the transformation is induced by a thermally activated process.</p></div>","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Pages L1023-L1029"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91014-F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136940354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electron induced adsorption, desorption and decomposition of ammonia on GaAs(100) 电子诱导氨在GaAs(100)上的吸附、解吸和分解
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91007-B
Y.-M. Sun, D.W. Sloan, T. Huett, J.M. White, John G. Ekerdt
{"title":"Electron induced adsorption, desorption and decomposition of ammonia on GaAs(100)","authors":"Y.-M. Sun,&nbsp;D.W. Sloan,&nbsp;T. Huett,&nbsp;J.M. White,&nbsp;John G. Ekerdt","doi":"10.1016/0167-2584(93)91007-B","DOIUrl":"https://doi.org/10.1016/0167-2584(93)91007-B","url":null,"abstract":"<div><p>The desorption and dissociation of ammonia adsorbed on (GaAs(100) occurs readily upon activation with 50 eV electrons. Complementary results from temperature programmed desorption and X-ray photoelectron spectroscopy indicate that the cross-sections for parent desorption and for dissociation to NH<sub><em>x</em></sub> (= 1, 2) are similar (10<sup>−16</sup>−10<sup>−17</sup> cm<sup>2</sup>), whereas that for nitride production is two orders of magnitude smaller. All these are more than an order of magnitude higher than observed in analogous photon-driven reactions.</p></div>","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Pages L982-L986"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91007-B","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136940369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal stability and intermixing of ultrathin Fe films on a Au(001) surface 超薄铁膜在Au(001)表面的热稳定性和混合
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91031-I
Q. Jiang, Y.-L. He, G.-C. Wang
{"title":"Thermal stability and intermixing of ultrathin Fe films on a Au(001) surface","authors":"Q. Jiang,&nbsp;Y.-L. He,&nbsp;G.-C. Wang","doi":"10.1016/0167-2584(93)91031-I","DOIUrl":"https://doi.org/10.1016/0167-2584(93)91031-I","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Page A695"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91031-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136520695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decomposition of silicon hydrides following disilane adsorption on porous silicon surfaces 硅氢化物在多孔硅表面吸附二硅烷后的分解
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91010-L
A.C. Dillon, M.B. Robinson, S.M. George
{"title":"Decomposition of silicon hydrides following disilane adsorption on porous silicon surfaces","authors":"A.C. Dillon,&nbsp;M.B. Robinson,&nbsp;S.M. George","doi":"10.1016/0167-2584(93)91010-L","DOIUrl":"10.1016/0167-2584(93)91010-L","url":null,"abstract":"<div><p>Disilane (Si<sub>2</sub>H<sub>6</sub>) is used for silicon chemical vapor deposition (CVD) and is a potential precursor for atomic layer epitaxy (ALE) on silicon surfaces. In this study, Fourier transform infrared (FTIR) transmission spectroscopy was employed to examine the adsorption and decomposition of disilane on high surface area porous silicon surfaces. The FTIR spectra revealed that disilane dissociatively adsorbs on porous silicon surfaces at 200 K to form a large fraction of SiH<sub>3</sub> surface species and some SiH<sub>2</sub> and SiH surface species. The SiH<sub><em>x</em></sub> stretching modes between 2125–2156 cm<sup>−1</sup>, the SiH<sub>3</sub> degenerate deformation mode at 862 cm<sup>−1</sup> and the SiH<sub>2</sub> scissor mode at 907 cm<sup>−1</sup> were then employed to monitor the decomposition of the surface hybride species during thermal annealing. Between 200–600 K, the SiH<sub>3</sub> species decreased and were depleted from the silicon surface. Concurrently, the SiH<sub>2</sub> surface species were observed to increase between 200–440 K and subsequently to decrease between 440–620 K. Only monohydride species remained on the porous silicon surface at 620 K. Above 640 K, the SiH surface species decreased concurrently with H<sub>2</sub> desorption. Adsorption studies were also conducted at various isothermal temperatures. These disilane adsorption and decomposition experiments provide important insights to the surface chemistry during silicon CVD and ALE processing.</p></div>","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Pages L998-L1004"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91010-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53713432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Calculations for ledge energies on the diamond (111) surface 计算钻石(111)表面的边缘能量
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91026-K
Hiromu Shiomi, Timur Halicioglu
{"title":"Calculations for ledge energies on the diamond (111) surface","authors":"Hiromu Shiomi,&nbsp;Timur Halicioglu","doi":"10.1016/0167-2584(93)91026-K","DOIUrl":"10.1016/0167-2584(93)91026-K","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Page A693"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91026-K","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"110584139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of electrochemical electron transfer reactions with a scanning tunneling microscope: a theoretical study 用扫描隧道显微镜研究电化学电子转移反应的理论研究
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91018-J
Wolfgang Schmickler
{"title":"Investigation of electrochemical electron transfer reactions with a scanning tunneling microscope: a theoretical study","authors":"Wolfgang Schmickler","doi":"10.1016/0167-2584(93)91018-J","DOIUrl":"https://doi.org/10.1016/0167-2584(93)91018-J","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Page A690"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91018-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136507201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low temperature adsorption of CO on Pt(111): disequilibrium and the occupation of three-fold hollow sites CO在Pt(111)上的低温吸附:不平衡及三重空心位的占据
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91008-C
J.V. Nekrylova, C. French, A.N. Artsyukhovich, V.A. Ukraintsev, I. Harrison
{"title":"Low temperature adsorption of CO on Pt(111): disequilibrium and the occupation of three-fold hollow sites","authors":"J.V. Nekrylova,&nbsp;C. French,&nbsp;A.N. Artsyukhovich,&nbsp;V.A. Ukraintsev,&nbsp;I. Harrison","doi":"10.1016/0167-2584(93)91008-C","DOIUrl":"10.1016/0167-2584(93)91008-C","url":null,"abstract":"<div><p>The adsorption of CO on a Pt(111) surface held at 20 K under ultrahigh vacuum was investigated using vibrational and thermal desorption spectroscopies. In contrast to adsorption at higher temperatures, surface diffusion of chemisorbed CO across the surface was suppressed and vibrational spectroscopy showed non-equilibrium occupation of top, bridge and three-fold hollow sites. The saturation coverage of chemisorbed CO at 20 K was 0.5 ML. The infrared absorption band attributed to three-fold hollow site CO was centered at 1736 cm<sup>−1</sup>. The integrated absorbance of the 1736 cm<sup>−1</sup> band grew in and saturated as the exposure was increased from 0.35 to 1 ML.</p></div>","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Pages L987-L992"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91008-C","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"53713383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Molecular dynamics simulations of α-alumina and γ-alumina surfaces α-氧化铝和γ-氧化铝表面的分子动力学模拟
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91037-O
S. Blonski, S.H. Garofalini
{"title":"Molecular dynamics simulations of α-alumina and γ-alumina surfaces","authors":"S. Blonski,&nbsp;S.H. Garofalini","doi":"10.1016/0167-2584(93)91037-O","DOIUrl":"10.1016/0167-2584(93)91037-O","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Page A697"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91037-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109311730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Ab initio H2 desorption pathways for H/Si(100): the role of SiH2(1) 从头算H/Si(100)的H2解吸途径:SiH2(1)的作用
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91020-O
Christine J. Wu, Irina V. Ionova, Emily A. Carter
{"title":"Ab initio H2 desorption pathways for H/Si(100): the role of SiH2(1)","authors":"Christine J. Wu,&nbsp;Irina V. Ionova,&nbsp;Emily A. Carter","doi":"10.1016/0167-2584(93)91020-O","DOIUrl":"10.1016/0167-2584(93)91020-O","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Pages A690-A691"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91020-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79379000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Angle-resolved photoemission study of oxygen-induced c(2×4) structure on Pd(110) Pd(110)上氧诱导c(2×4)结构的角分辨光发射研究
Surface Science Letters Pub Date : 1993-09-20 DOI: 10.1016/0167-2584(93)91034-L
Kazutoshi Yagi, Kazuyuki Higashiyama, Hirohito Fukutani
{"title":"Angle-resolved photoemission study of oxygen-induced c(2×4) structure on Pd(110)","authors":"Kazutoshi Yagi,&nbsp;Kazuyuki Higashiyama,&nbsp;Hirohito Fukutani","doi":"10.1016/0167-2584(93)91034-L","DOIUrl":"https://doi.org/10.1016/0167-2584(93)91034-L","url":null,"abstract":"","PeriodicalId":101188,"journal":{"name":"Surface Science Letters","volume":"295 1","pages":"Page A696"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0167-2584(93)91034-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136544056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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