PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 121 | 5-6 | 1228-1230
Article title

Interval Identification of FMR Parameters for Spin Reorientation Transition in (Ga,Mn)As

Content
Title variants
Languages of publication
EN
Abstracts
EN
In this work we report results of ferromagnetic resonance studies of a 6% 15nm (Ga,Mn)As layer, deposited on (001)-oriented GaAs. The measurements were performed with in-plane oriented magnetic field, in the temperature range between 5 K and 120 K. We observe a temperature induced reorientation of the effective in-plane easy axis from [\overline{1}10] to [110] direction close to the Curie temperature. The behavior of magnetization is described by anisotropy fields, H_{eff} (=4π M-H_{2⊥}), H_{2∥}, and H_{4∥}. In order to precisely investigate this reorientation, numerical values of anisotropy fields have been determined using powerful - but still largely unknown - interval calculations. In simulation mode this approach makes possible to find all the resonance fields for arbitrarily oriented sample, which is generally intractable analytically. In "fitting" mode we effectively utilize full experimental information, not only those measurements performed in special, distinguished directions, to reliably estimate the values of important physical parameters as well as their uncertainties and correlations.
Keywords
Year
Volume
121
Issue
5-6
Pages
1228-1230
Physical description
Dates
published
2012-05
References
  • 1. 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(R) (2005)
  • 2. J. Zemen, J. Kučera, K. Olejnik, T. Jungwirth, Phys. Rev. B 80, 155203 (2009)
  • 3. W. Stefanowicz, C. Śliwa, P. Aleshkevych, T. Dietl, M. Döppe, U. Wurstbauer, W. Wegscheider, D. Weiss, M. Sawicki, Phys. Rev. B 81, 155203 (2010)
  • 4. D. Chiba, M. Sawicki, Y. Nishitani, Y. Nakatani, F. Matsukura, H. Ohno, Nature (London) 455, 515 (2008)
  • 5. http://www.cs.utep.edu/interval-comp/
  • 6. M.W. Gutowski, arxiv/0903.0365
  • 7. X. Liu, J.K. Furdyna, J. Phys., Condens. Matter 18, R245 (2006)
  • 8. Y.Y. Zhou, X. Liu, J.K. Furdyna, M.A. Scarpulla, O.D. Dubon, Phys. Rev. B 80, 224403 (2009)
  • 9. X. Liu, Y. Sasaki, J.K. Furdyna, Phys. Rev. B 67, 205204 (2003)
  • 10. S. Piano, X. Marti, A.W. Rushforth, K.W. Edmonds, R.P. Campion, O. Caha, T.U. Schulli, V. Holý, B.L. Gallagher, Appl. Phys. Lett. 98, 152503 (2011)
  • 11. M.W. Gutowski, J. Nanotechnol., 2011, article ID 952846, doi:10.1155/2011/952846
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n5-6p73kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.