Atomic and electronic structure of germanium clusters at finite temperature using finite difference methods

James R. Chelikowsky, Serdar Ogut, X. Jing, K. Wu, A. Stathopoulos, Y. Saad

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

Determining the electronic and structural properties of semiconductor clusters is one of the outstanding problems in materials science. The existence of numerous structures with nearly identical energies makes it very difficult to determine a realistic ground state structure. Moreover, even if an effective procedure can be devised to predict the ground state structure, questions can arise about the relevancy of the structure at finite temperatures. Kinetic effects and non-equilibrium structures may dominate the structural configurations present in clusters created under laboratory conditions. We illustrate theoretical techniques for predicting the structure and electronic properties of small germanium clusters. Specifically, we illustrate that the detailed agreement between theoretical and experimental features can be exploited to identify the relevant isomers present under experimental conditions.

Original languageEnglish (US)
Pages (from-to)19-30
Number of pages12
JournalMaterials Research Society Symposium - Proceedings
Volume408
StatePublished - Dec 1 1996
EventProceedings of the 1996 MRS Fall Symposium - Boston, MA, USA
Duration: Nov 27 1995Dec 1 1995

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