Uniaxial Strain Controlling Magnetic Anisotropy in (Ga,Mn)As

• Authors: J. Zemen , T. Jungwirth , J. Wunderlich , B. Gallagher
• Languages of publication: EN

Abstracts

EN

A theoretical study of magnetocrystalline anisotropy controlled by in-plane lattice symmetry distortions is presented. The uniaxial strain, only presumed by earlier studies in order to model the observed uniaxial magnetic anisotropy, has recently become an experimentally accessible parameter. We show that the lithographically induced strain can compete with intrinsic symmetry breaking, easy axes can take general in-plane directions, and anisotropy fields scale linearly with strain for typical experimental strain magnitudes. Our results are in qualitative agreement with experimental results.

Keywords

EN

75.30.Gw; 78.55.Cr; 75.50.Pp

Discipline

• 78.55.Cr: III-V semiconductors
• 75.30.Gw: Magnetic anisotropy
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 112
• Issue: 2
• Pages: 431-435

Dates

published

2007-08

received

2007-06-09

Contributors

author

J. Zemen

• Institute of Physics of the ASCR v. v. i., Cukrovarnicka 10, 16253, Prague 6, Czech Republic

author

T. Jungwirth

• Institute of Physics of the ASCR v. v. i., Cukrovarnicka 10, 16253, Prague 6, Czech Republic
• School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK

author

J. Wunderlich

• Hitachi Cambridge Laboratory, Cambridge CB3 0HE, UK

author

B. Gallagher

• School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK

References

• 1. H. Ohno, D. Chiba, F. Matsukura, T. Omiya, E. Abe, T. Dietl, Y. Ohno, K. Ohtani, Nature, 408, 944, 2000
• 2. M. Sawicki, K.Y. Wang, K.W. Edmonds, R.P. Campion, C.R. Staddon, N.R.S. Farley, C.T. Foxon, E. Papis, E. Kamińska, A. Piotrowska, T. Dietl, B.L. Gallagher, Phys. Rev. B, 71, 121302, 2005
• 3. K.Y. Wang, M. Sawicki, K.W. Edmonds, R.P. Campion, S. Maat, C.T. Foxon, B.L. Gallagher, T. Dietl, Phys. Rev. Lett., 95, 217204, 2005
• 4. L. Thevenard, L. Largeau, D. Mauguin, G. Patriarche, A. Lema^itre, N. Vernier, J. Ferré, Phys. Rev. B, 73, 195331, 2006
• 5. J. Wenisch, C. Gould, L. Ebel, J. Storz, K. Pappert, M.J. Schmidt, cond-mat/0701479
• 6. S. Humpfner, K. Pappert, J. Wenisch, K. Brunner, C. Gould, G. Schmidt, L.W. Molenkamp, M. Sawicki, T. Dietl, Appl. Phys. Lett., 90, 102102, 2007
• 7. J. Wunderlich, A.C. Irvine, J. Zemen, V. Holý, A.W. Rushforth, E. De Ranieri, U. Rana, K. Vlýborný, Jairo Sinova, C.T. Foxon, R.P. Campion, D.A. Williams, B.L. Gallagher, T. Jungwirth, to be published in Phys. Rev. B
• 8. T. Dietl, H. Ohno, F. Matsukura, Phys. Rev. B, 63, 195205, 2001
• 9. M. Abolfath, T. Jungwirth, J. Brum, A.H. MacDonald, Phys. Rev. B, 63, 054418, 2001
• 10. W.W. Chow, S.W. Koch, Semiconductor-Laser Fundamentals, Springer, Berlin 1999

Identifiers

DOI

10.12693/APhysPolA.112.431