PL EN


Preferences help
enabled [disable] Abstract
Number of results
Journal
2009 | 7 | 2 | 175-178
Article title

Dependence of the magnetic properties of MnGaN epitaxial layers on external electrical field

Content
Title variants
Languages of publication
EN
Abstracts
EN
Investigation of the magnetic properties of MnGaN epitaxial layers as a function of external electrical field was performed on the basis of field effect structure. The structure included substrate of n-type GaN, epitaxial layer of n-type MnxGa1-xN, dielectric layer and metal layer acting as field effect device gate. Each Mn atom in MnxGa1-xN contributes 4 net spins due to the electrons occupying energy levels 4F, 4D, 4P and 4G belonging to 3d orbital, and these levels are in the energy band gap and in the top of the valence band of MnxGa1-xN. The position of the Fermi level is determined to be in the energy band gap of the layer of GaN and to be above the level 4F in the layer of MnxGa1-xN. In this way application of external negative voltage on the gate causes change in the number of electrons contributing net spins and the saturation magnetization Msat of MnxGa1-xN changes as well. It was found that Msat changes in the range 1.15 × 10−3–0.7 × 10−3 A μm−1 if the external voltage changes in the interval 0–−5V. The application of this structure for the design of spintronic devices is discussed in this paper. [...]
Publisher

Journal
Year
Volume
7
Issue
2
Pages
175-178
Physical description
Dates
published
1 - 6 - 2009
online
9 - 4 - 2009
Contributors
References
  • [1] D. Alexandrov, N. Dietz, I. Ferguson, H. Yu, “Electron Band Structure of MnGaN”, Symposium Q, MRS 2007 Fall Meeting, November 26–30, 2007, Boston, MA, USA
  • [2] E. Malguth, A. Hoffmann, W. Gehlhoff, Symposium Q, MRS 2007 Fall Meeting, November 26–30, 2007, Boston, MA, USA
  • [3] A. Hoffmann, E. Malguth, W. Gehlhoff, Symposium Q, MRS 2007 Fall Meeting, November 26–30, 2007, Boston, MA, USA
  • [4] L. Kronik, M. Jain, J. Chelikowsky, Phys. Rev. B 66, 041203(R) (2002) http://dx.doi.org/10.1103/PhysRevB.66.041203[Crossref]
  • [5] M.B. Haider, C. Constantin, H. Al-Brithen, H. Yang, E. Trifan, D. Ingram, A. Smith, C. Kelly, Y. Ijiri, J. of Appl. Phys. 93, 5274 (2003) http://dx.doi.org/10.1063/1.1565511[Crossref]
  • [6] M. Aoki, H. Yamane, M. Shimada, T. Kajawara, J. of Alloys and Compounds 364, 280 (2004) http://dx.doi.org/10.1016/S0925-8388(03)00506-1[Crossref]
  • [7] M.B. Haider, C. Constantin, H. Al-Brithen, G. Carutu, C. O’Connor, A. Smith, Phys. Stat. Sol. (a) 202, 1135 (2005) http://dx.doi.org/10.1002/pssa.200420004[Crossref]
  • [8] M. Marques, L. Ferreira, L. Teles, L. Scolfaro, J. Furthmuler, F. Bechstedt, Phys. Rev. B 73, 224409 (2006) http://dx.doi.org/10.1103/PhysRevB.73.224409[Crossref]
  • [9] D. Alexandrov, J. of Crys. Gr. 246, 325 (2002) http://dx.doi.org/10.1016/S0022-0248(02)01758-X[Crossref]
  • [10] D. Alexandrov, S. Butcher, T. Tansley, Phys. Stat. Sol. (b) 203, 25 (2006) http://dx.doi.org/10.1002/pssa.200563501[Crossref]
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-008-0079-3
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.