A Monte Carlo Study of Critical Properties of Strongly Diluted Magnetic Semiconductor (Ga,Mn)As

• Authors: P. Tomczak , H. Diep , P. Jabłoński , H. Puszkarski
• Languages of publication: EN

Abstracts

EN

Within a Monte Carlo technique we examine critical properties of diluted bulk magnetic semiconductor (Ga,Mn)As modeled by a strongly diluted ferromagnetic Heisenberg spin-5/2 system on a face centered cubic lattice. We assumed that 5% of Ga atoms is substituted by Mn atoms and the interaction between them is of the RKKY-type. The considered system is randomly quenched and a double average was performed: firstly, over the Boltzmann probability distribution and secondly - over 2048 configurations related to the quenched disorder. We estimated the critical temperature: T_{c}=97±6 K, which is in agreement with the experiment.

Keywords

EN

75.50.Pp; 75.10.Nr; 75.30.Hx

Discipline

• 75.30.Hx: Magnetic impurity interactions
• 75.50.Pp: Magnetic semiconductors
• 75.10.Nr: Spin-glass and other random models(for spin glasses and other random magnets, see 75.50.Lk)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 514-516

Dates

published

2018-03

Contributors

author

P. Tomczak

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

H. Diep

• Laboratoire de Physique Theorique et Modelisation, Universite de Cergy-Pontoise, CNRS, UMR 8089 2, Avenue Adolphe Chauvin, 95302 Cergy-Pontoise Cedex, France

author

P. Jabłoński

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

H. Puszkarski

• Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.133.514