Ferromagnetic Transition in Ge_{1-x}Mn_{x}Te Layers

• Authors: W. Knoff , V. Domukhovski , K. Dybko , P. Dziawa , R. Jakieła , E. Łusakowska , A. Reszka , K. Świątek , B. Taliashvili , T. Story , K. Szałowski , T. Balcerzak
• Languages of publication: EN

Abstracts

EN

Ferromagnetic transition temperature in thin layers of diluted magnetic (semimagnetic) semiconductor Ge_{1-x}Mn_{x}Te was studied experimentally by SQUID magnetometry method and analyzed theoretically for a model Ising-type diluted magnetic system with Ruderman-Kittel-Kasuya-Yosida indirect exchange interaction. The key features of the experimentally observed dependence of the Curie temperature on Mn content (x ≤ 0.12) and conducting hole concentration p = (1-10) × 10^{21} cm^{-3} were reproduced theoretically for realistic valence band and crystal lattice parameters of p-Ge_{1-x}Mn_{x}Te taking into account short carrier mean free path encountered in this material and Ruderman-Kittel-Kasuya-Yosida mechanism with both delta-like and diffused character of spatial dependence of the exchange coupling between magnetic ions and free carriers.

Keywords

EN

75.50.Pp; 75.30.Et; 81.15.Hi

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 81.15.Hi: Molecular, atomic, ion, and chemical beam epitaxy
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 904-906

Dates

published

2009-11

Contributors

author

W. Knoff

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

V. Domukhovski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

K. Dybko

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

P. Dziawa

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

R. Jakieła

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

E. Łusakowska

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

A. Reszka

• Faculty of Mathematics and Natural Sciences, College of Science, Cardinal S. Wyszyński University, Dewajtis 5, 01-185 Warsaw, Poland

author

K. Świątek

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

B. Taliashvili

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

T. Story

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

K. Szałowski

• Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

author

T. Balcerzak

• Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-236 Łódź, Poland

References

• 1. T. Story, in: Lead Chalcogenides - Physics and Applications, Ed. D.R. Khokhlov, Taylor and Francis, New York 2003, p. 385
• 2. P.J.T. Eggenkamp, H.J.M. Swagten, T. Story, V.I. Litvinov, W.J.M. de Jonge, Phys. Rev. B 51, 15250 (1995)
• 3. R.W. Cochrane, M. Plischke, J.O. Strom-Olsen, Phys. Rev. B 9, 3013 (1974)
• 4. Y. Fukuma, K. Goto, S. Senba, S. Miyawaki, H. Asada, T. Koyanagi, H. Sato, J. Appl. Phys. 103, 053904 (2008)
• 5. W.Q. Chen, K.L. Teo, S.T. Lim, M.B.A. Jalil, T. Liew, T.C. Chong, Appl. Phys. Lett. 90, 142514 (2007)
• 6. W. Knoff, V. Domukhovski, K. Dybko, P. Dziawa, M. Górska, R. Jakieła, E. Łusakowska, A. Reszka, B. Taliashvili, T. Story, J.R. Anderson, C.R. Rotundu, Acta Phys. Pol. A 114, 1159 (2008)
• 7. W. Knoff, P. Dziawa, V. Osinniy, B. Taliashvili, V. Domukhovski, E. Łusakowska, K. Świątek, T. Story, Mater. Sci. - Poland 25, 295 (2007)
• 8. K. Szałowski, T. Balcerzak, Phys. Rev. B 77, 115204 (2008)
• 9. K. Szałowski, T. Balcerzak, Phys. Rev. B 78, 024419 (2008)

Identifiers

DOI

10.12693/APhysPolA.116.904