DOI: 10.1002/pssa.200669574. Electronic structure and exchange constants in magnetic semiconductor digital alloys: chemical and band‐gap effects

Electronic structure and exchange constants in magnetic semiconductor digital alloys: chemical and band‐gap effects

10.1002/pssa.200669574

Crossref journal-article

Wiley

physica status solidi (a) (311)

Abstract

AbstractFirst‐principles simulations have been performed for [001]‐ordered Mn/Ge and Mn/GaAs “digital alloys”, focusing on the effects of (i) a larger band‐gap and (ii) a different semiconducting host on the electronic structure of the magnetic semiconductors of interest. Our results for the exchange constants in Mn/Ge, evaluated using a frozen‐magnon scheme, show that a larger band‐gap tends to give a stronger nearest‐neighbor ferromagnetic coupling and an overall enhanced in‐plane ferromagnetic coupling even for longer‐ranged coupling constants. As for the chemical effects on the exchange constants, we show that Mn/GaAs shows a smaller nearest‐neighbor ferromagnetic coupling than Mn/Ge, but exchange constants for higher Mn–Mn distance show an overall increased ferromagnetic behavior in Mn/GaAs. As a result, from the magnetic‐coupling point of view, the two systems behave on average rather similarly. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Bibliography

Picozzi, S., LeÅ¾aiÄ, M., & BlÃ¼gel, S. (2006). Electronic structure and exchange constants in magnetic semiconductor digital alloys: chemical and bandâgap effects. Physica Status Solidi (a), 203(11), 2738â2745. Portico.

Authors 3

S. Picozzi (first)
M. Ležaić (additional)
S. Blügel (additional)

References 29 Referenced 14

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Dates

Type	When
Created	19 years ago (Aug. 31, 2006, 7:51 a.m.)
Deposited	1 year, 11 months ago (Sept. 29, 2023, 10:34 a.m.)
Indexed	1 year, 11 months ago (Sept. 30, 2023, 12:10 p.m.)
Issued	19 years ago (Aug. 31, 2006)
Published	19 years ago (Aug. 31, 2006)
Published Online	19 years ago (Aug. 31, 2006)
Published Print	18 years, 11 months ago (Sept. 1, 2006)

Funders 0

None

BibTeX

@article{Picozzi_2006, title={Electronic structure and exchange constants in magnetic semiconductor digital alloys: chemical and band‐gap effects}, volume={203}, ISSN={1862-6319}, url={http://dx.doi.org/10.1002/pssa.200669574}, DOI={10.1002/pssa.200669574}, number={11}, journal={physica status solidi (a)}, publisher={Wiley}, author={Picozzi, S. and Ležaić, M. and Blügel, S.}, year={2006}, month=aug, pages={2738–2745} }

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