Compositional Dependence of the Formation Energies of Substitutional and Interstitial Mn in Partially Compensated (Ga,Mn)As

• Authors: J. Mašek , I. Turek , J. Kudrnovský , F. Máca , V. Drchal
• Languages of publication: EN

Abstracts

EN

We use the density-functional theory to calculate the total energy of mixed crystals (Ga,Mn)As with a small concentration of various donors. We find that the formation energy of Mn depends strongly on the partial concentrations of Mn in the substitutional and interstitial positions, and on the concentration of other dopants. The composition dependence of the formation energies represents an effective feedback mechanism, resulting in the self-compensation property of (Ga,Mn)As. We show that the partial concentrations of both substitutional and interstitial Mn increase proportionally to the total concentration of Mn.

Keywords

EN

71.15.Ap   71.20.Nr   71.55.Eq   75.50.Pp  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 6
• Pages: 637-644

Dates

published

2004-06

received

2004-05-28

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Identifiers

DOI

10.12693/APhysPolA.105.637