Search for tunnelling centres in Lennard-Jones clusters

Details Search for tunnelling centres in Lennard-Jones clusters Search for tunnelling centres in Lennard-Jones clusters

1997-10-06

arxiv.org/abs/cond-mat/9710057v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

7 pages, Revtex, 5 ps figures, to be published in Philosophical Magazine, January 1998, Proceedings of he 6th International Wo

Scientific paper

We report on numerical procedures for, and preliminary results on the search for, tunnelling centres in Lennard-Jones clusters, seen as simple model systems of glasses. Several of the double-well potentials identified are good candidates to give rise to two-level systems. The role of boundary effects, and the application of the semiclassical WKB approximation in multidimensional spaces for the calculation of the ground state splitting are discussed.

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