|
| << previous | next >> |
Journal description
All volumes of the corresponding journal
All issues of the corresponding volume
All articles of the corresponding issues
Details for article 29 of 37 found articles
| Title: |
Polarizabilities of intermediate sized lithium clusters from density-functional theory |
| Author: |
Zope, Rajendra R. Baruah, Tunna Pederson, Mark R. |
| Appeared in: |
Journal of computational methods in sciences and engineering |
| Paging: | Volume 7 (2008) nr. 5-6 pages 495-505 |
| Year: |
2008-05-27 |
| Contents: |
We present a detailed investigation of static dipole polarizability of lithium clusters containing up to 22 atoms. We first build a database of lithium clusters by optimizing several candidate structures for the ground state geometry for each size. The full polarizability tensor is determined for about 5–6 isomers of each cluster size using the finite-field method. All calculations are performed using large Gaussian basis sets, and within the generalized gradient approximation to the density functional theory, as implemented in the NRLMOL suite of codes. The average polarizability per atom varies from 11 to 9 AAA, within the 8–22 size range and show smoother decrease with increase in cluster size than the experimental values. While the average polarizability exhibits a relatively weak dependence on cluster conformation, significant changes in the degree of anisotropy of the polarizability tensor are observed. Interestingly, in addition to the expected even odd (0 and 1 μ_B) magnetic states, our results show several cases where clusters with an odd number of Li atoms exhibit elevated spin states (e.g. 3 μ_B). |
| Publisher: |
IOS Press |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 29 of 37 found articles
| << previous | next >> |