Time-dependent local-density approximation in real time
- Department of Physics, Niigata University, Niigata (Japan)
- Physics Department and Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States)
We study the dipole response of atomic clusters by solving the equations of the time-dependent local-density approximation in real time. The method appears to be more efficient than matrix or Green{close_quote}s function methods for large clusters modeled with realistic ionic pseudopotentials. As applications of the method, we exhibit results for sodium and lithium clusters and for C{sub 60} molecules. The calculated Mie resonance in Na{sub 147} is practically identical to that obtained in the jellium approximation, leaving the origin of the redshift unresolved. The pseudopotential effects are strong in lithium and act to broaden the Mie resonance and give it a substantial redshift, confirming earlier studies. There is also a large broadening due to Landau damping in the calculated C{sub 60} response, again confirming earlier studies. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Univ. of Washington, Seattle, WA (United States)
- DOE Contract Number:
- FG06-90ER40561
- OSTI ID:
- 286716
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 54, Issue 7; Other Information: PBD: Aug 1996
- Country of Publication:
- United States
- Language:
- English
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