Surface plasmons on Pd(110): An ab initio calculation; Physical Review B; Vol. 103, iss. 4
| Parent link: | Physical Review B Vol. 103, iss. 4.— 2021.— [045407, 9 p.] |
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| Coauteur: | |
| Andere auteurs: | , , , , |
| Samenvatting: | Title screen The surface excitation spectra of the Pd(110) surface is analyzed in the framework of the time-dependent density functional theory. The ab initio electronic structure of this surface is included into the evaluation of the surface response function using a linear response approach. At small momentum transfer the extrapolated energy of the surface plasmon is close to electron-energy-loss-spectroscopy measurements and can be understood considering the bulk Pd dielectric function. However, upon momentum increase the evaluated dispersion of the surface plasmon presents significant discrepancies with the published experimental data. While the experimental surface plasmon dispersion initially presents a strong negative slope, our calculations indicate a weak positive dispersion at all finite momentum transfers where this collective excitation is observed. Interestingly, we do not observe any noticeable effect on the collective surface excitations induced by the large number of surface states in the valence band of Pd(110). These states do not produce any additional mode at energies below the surface plasmon. Режим доступа: по договору с организацией-держателем ресурса |
| Taal: | Engels |
| Gepubliceerd in: |
2021
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| Onderwerpen: | |
| Online toegang: | https://doi.org/10.1103/PhysRevB.103.045407 |
| Formaat: | MixedMaterials Elektronisch Hoofdstuk |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664423 |
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| 200 | 1 | |a Surface plasmons on Pd(110): An ab initio calculation |f U. Muniain, R. Esteban, I. P. Chernov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 86 tit.] | ||
| 330 | |a The surface excitation spectra of the Pd(110) surface is analyzed in the framework of the time-dependent density functional theory. The ab initio electronic structure of this surface is included into the evaluation of the surface response function using a linear response approach. At small momentum transfer the extrapolated energy of the surface plasmon is close to electron-energy-loss-spectroscopy measurements and can be understood considering the bulk Pd dielectric function. However, upon momentum increase the evaluated dispersion of the surface plasmon presents significant discrepancies with the published experimental data. While the experimental surface plasmon dispersion initially presents a strong negative slope, our calculations indicate a weak positive dispersion at all finite momentum transfers where this collective excitation is observed. Interestingly, we do not observe any noticeable effect on the collective surface excitations induced by the large number of surface states in the valence band of Pd(110). These states do not produce any additional mode at energies below the surface plasmon. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review B | ||
| 463 | |t Vol. 103, iss. 4 |v [045407, 9 p.] |d 2021 | ||
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| 701 | 1 | |a Esteban |b R. |g Rube'n | |
| 701 | 1 | |a Chernov |b I. P. |c Doctor of Physical and Mathematical Sciences (DSc), Professor of the Department of General Physics of Tomsk Polytechnic University (TPU) |f 1935- |g Ivan Petrovich |3 (RuTPU)RU\TPU\pers\30202 |9 14596 | |
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| 701 | 1 | |a Silkin |b I. V. |g Igor Vyacheslavovich | |
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