Effects of adsorbate-induced states on the metastable He atom scattering from water- and benzene-adsorbed Cu(100)

Kurahashi, Mitsunori; Yamauchi, Yasushi

doi:10.1016/j.susc.2005.05.066

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…2). This indicates that the multilayer starts to grow from ∼5 L and covers the whole surface at ∼15 L. Similar behaviors have been reported for metallic surfaces covered with various molecular adsorbates, 8,19 and the slope change in the electron yield can be associated with the completion of the monolayer and the onset of multilayer island growth. 19 The electron yield is higher on the multilayer surface because He* decays mainly via the PI, which causes an electron yield higher than that for the RI + AN, while the RI + AN also occurs on monolayer surface.…”

Section: Methodssupporting

confidence: 81%

Magnetic properties of O2adsorbed on Cu(100): A spin-polarized metastable He beam study

2012

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Magnetic properties of O 2 adsorbed on Cu(100) were investigated by monitoring the spin dependence in Penning ionization of metastable He(2 3 S) under external magnetic fields of 0-5 T. A clear spin polarization was found for the 3σ g and 1π u orbitals of physisorbed O 2 under external fields, while the spin polarization disappeared when O 2 was changed into the chemisorbed state at >50 K. The magnetic susceptibility at the surface of multilayer and monolayer of physisorbed O 2 on Cu(100) was similar to that for the bulk liquid O 2 . Observed exchange splittings and spin polarization suggest that a physisorbed O 2 molecule has a magnetic moment close to that for an isolated O 2 molecule even at submonolayer coverages, while a density functional theory calculation predicts a much reduced magnetic moment for O 2 directly adsorbed on Cu(100).

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Section: Methodssupporting

confidence: 81%

Magnetic properties of O2adsorbed on Cu(100): A spin-polarized metastable He beam study

2012

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“…On the contrary, in the top panel, almost no intensity is found in the energy region above 13 eV, designating a complete multilayer coverage with a clear band gap. At small exposures (1−4 L) to benzene vapor, a shoulder appears at 16 eV, which is also observed for benzene on Pt(111) 20 and Cu(100) . This shoulder would be originated from the AD involving the new electronic states induced from the π* states of the benzene molecule by the molecule−substrate interaction in the monolayer regions.…”

Section: Experimental Techniques and Resultsmentioning

confidence: 67%

Spin Polarization Study of Benzene Molecule Adsorbed on Fe(100) Surface with Metastable-Atom Deexcitation Spectroscopy and Density Functional Calculations

et al. 2007

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The spin-resolved electronic states and spin polarization of a benzene molecule adsorbed on an Fe(100) surface are investigated using spin-polarized metastable-atom deexcitation spectroscopy (SPMDS) measurements and density functional calculations. The spin asymmetry observed by the SPMDS is found to be negative at the induced π* states close to the Fermi level and positive in molecular orbitals. The opposite spin asymmetry can be explained well by the calculated spin density distributions and plane-averaged density of states on the vacuum side. It is also found that the energy region of the negative spin asymmetry increases with increasing coverage of the benzene molecule. This phenomenon has been discussed in conjunction with the possible multiple adsorption sites, followed by an argument for the site-dependent spin polarization.

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Experimental Results: Beyond Single Phonons

Benedek

Toennies

2018

Springer Series in Surface Sciences

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Effects of adsorbate-induced states on the metastable He atom scattering from water- and benzene-adsorbed Cu(100)

Cited by 6 publications

References 30 publications

Magnetic properties of O2adsorbed on Cu(100): A spin-polarized metastable He beam study

Magnetic properties of O2adsorbed on Cu(100): A spin-polarized metastable He beam study

Spin Polarization Study of Benzene Molecule Adsorbed on Fe(100) Surface with Metastable-Atom Deexcitation Spectroscopy and Density Functional Calculations

Experimental Results: Beyond Single Phonons

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