Barman, S. R. ; Horn, K. ; Häberle, P. ; Ishida, H. ; Liebsch, A. (1998) Photoinduced plasmon excitations in alkali-metal overlayers Physical Review B: Condensed Matter and Materials Physics, 57 (11). pp. 6662-6665. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v57/i11/p6662_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.57.6662
Abstract
Collective surface excitations in alkali-metal overlayers are observed using photoyield spectroscopy. Spectra for Na and K on Al(111) reveal a multipole surface plasmon and bulklike overlayer plasmon. In contrast, Li on Al exhibits only the multipole mode. In the submonolayer regime, all three alkali metals provide evidence for the threshold excitation. Time-dependent density-functional calculations for realistic alkali-metal overlayers agree well with these observations.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 64570 |
| Deposited On: | 12 Oct 2011 05:04 |
| Last Modified: | 18 May 2016 12:57 |
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