Skip to main content Accessibility help

Gadolinium and Oxygen co-doping of Gallium Nitride: an LSDA + U study

  • Walter R. L. Lambrecht (a1) and Paul Larson (a2)


Results of first-principles supercell calculations for Gd impurities, with and without O-impurities in the same cell are presented. The possibility of colossal magnetic moments, as reported by Dhar et al., [Phys. Rev. Lett. 94, 037205 (2005)] is discussed in view of the results. Particular attention is paid to the size of the conduction band spin splitting, induced by Gd. It is argued that O plays a more active role than merely providing the electrons leading to the magnetic moment. Estimates are made of the splitting of the conduction band required to explain the occurrence of colossal magnetic moments.



Hide All
1. Teraguchi, N., Suzuki, A., Nanishi, Y., Zhou, Y-K., Hashimoto, M., and Asahi, H., Solid State Commun. 122, 651 (2002).
2. Asahi, H., Zhou, Y. K., Hashimoto, H., Kim, M. S., Li, X. J., Emura, S., and, Hasegawa, S., J. Phys. Condens. Matter 16, S5555 (2004).
3. Dhar, S., Brandt, O., Ramsteiner, M., Sapega, V. S., and Ploog, K. H., Phys. Rev. Lett. 94, 037205 (2005).
4. Pérez, L., Lau, G. S., Dhar, S., Brandt, O., and Ploog, K. H., Phys. Rev. B 74, 195207 (2006)
5. Dhar, S., Pérez, L., Brandt, O., Trampert, A., Ploog, K. H., Keller, J. and Beschoten, B., Phys. Rev. B 72, 245203 (2005)
6. Dhar, S., Kammermeier, T., Ney, A., Pérez, L., Ploog, K. H., Melnikov, A. and Wieck, A. D., Appl. Phys. Lett. 89, 062503 (2006).
7. Dalpian, G. and Wei, S-H., Phys. Rev. B 72, 115201 (2005).
8. Liechtenstein, A. I., Anisimov, V. I., and Zaanen, J., Phys. Rev. B 52, R5467 (1995).11
9. Larson, P. and Lambrecht, W. R. L., Phys. Rev. B 74, 085108 (2006).
10. Larson, P. and Lambrecht, W. R. L., J. Phys. Condens. Matter 18, 11333 (2006).
11. Larson, P., Lambrecht, W. R. L., Chantis, A. and van Schilfgaarde, M., Phys. Rev. B 74, in press
12. Methfessel, M., van Schilfgaarde, M., and Casali, R., in Electronic Structure and Physical Properties of Solids, The Uses of the LMTO Method, edited by Hughes, Dreyssé, Springer Lecture Notes, Workshop Mont Saint Odille, France, 1998, (Springer, Berlin 2000), p. 114.


Gadolinium and Oxygen co-doping of Gallium Nitride: an LSDA + U study

  • Walter R. L. Lambrecht (a1) and Paul Larson (a2)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed