Abstract
Based on ab initio electronic structure calculations of Mn-doped III–V nitrides (AlN, GaN, InN), a co-doping method with size compensation to enhance the Curie temperature (TC) of Nitride-based DMS is proposed. Three cases are considered: (1) Single doping: cations are substituted randomly by Mn. (2) One-site co-doping: Cations or anions are substituted by co-dopants. (3) Two-site co-doping: co-dopants are introduced into both cation and anion sites. Be is chosen as co-dopant for (Al, Mn)N and (Ga, Mn)N, and Cd (or C) for (In, Mn)N. Concentrations of co-dopants are chosen as a function of Mn concentration so that the volume distortion caused by Mn doping is reduced. It is found that, by hole co-doping, the ferromagnetism is more stabilized than that in the single doping case. The anti-ferromagnetic super-exchange interaction, which remains dominant for high Mn concentrations in (Al, Mn)N and (Ga, Mn)N due to the small lattice constant, is reduced by co-doping Be into both kinds of sites, resulting in a strong enhancement of TC in the regime of high Mn-concentrations. Furthermore, as the 3d-partial density of states at the Fermi level gains its maxima, one can expect that TC reaches its highest value.
Similar content being viewed by others
References
K. Sato and H. Katayama-Yoshida, Jpn. J. Appl. Phys. 40, L485 (2001).
T. Dietl, H. Ohno, F. Matsukura, J. Cibert, and D. Ferrand, Science 287, 1019 (2002).
K. Sato and H. Katayama-Yoshida, Semicond. Sci. Technol. 17, 367 (2002).
K. Sato, P. H. Dederichs, and H. Katayama-Yoshida, Europhys. Lett. 61, 403 (2003).
K. Sato, P. H. Dederichs, K. Araki, and H. Katayama-Yoshida, Phys. Status Solidi (c) 0 No. 7, 2855 (2003).
M. Hashimoto, Y. K. Zhou, M. Kanamura, and H. Asahi, Solid State Commun. 37, 122 (2002).
V. A. Dinh, K. Sato, and H. Katayama-Yoshida, in Proccedings of ISCNN04, Osaka, Japan, 1/2004.
V. A. Dinh, K. Sato, and H. Katayama-Yoshida, unpublished.
Stephen Y. Wu, H. X. Liu, L. Gu, R. K. Singh, L. Budd, M. van Schilfgaarde, M. R. McCartney, D. J. Smith, and N. Newman, Appl. Phys. Lett. 82, 3047 (2003).
V. A. Dinh, K. Sato, and H. Katayama-Yoshida Jpn. J. Appl. Phys. 42, L888–L891 (2003).
V. A. Dinh, K. Sato, and H. Katayama-Yoshida, J. Phys.: Condens. Matter 16, S5705–S5709 (2004).
R. Kling, A. Koeder, W. Schoch, S. Frank, M. Oettinger, M. Limmer, R. Sauer, and A. Waag, Sol. Stat. Commun. 124, 207 (2002).
Y. D. Park, J. D. Lim, K. S. Suh, S. B. Shim, J. S. Lee, C. R. Abernathy, S. J. Pearton, Y. S. Kim, Z. G. Khim, and R. G. Wilson, Phys. Rev. B 68, 045429 (2003).
K. M. Yu, W. Walukiewicz, T. Wojtowicz, W. L. Lim, X. Liu, U. Bindley, M. Dobrowolska, and J. K. Furdyna, Phys. Rev. B 68, 041308(R)(2003).
L. Kronik, M. Jain, and J. R. Chelikowsky, Phys. Rev. B 66, 041203(R) (2002).
B. Sanyal, O. Bengone, S. Mirbt, Phys. Rev. B 68, 205210 (2003).
H. Akai and P. H. Dederichs, Phys. Rev. B 47, 87 (1993)39.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dinh, V.A., Sato, K. & Katayama-Yoshida, H. Carrier Co-doping Method with Size Compensation to Enhance TC of Mn-doped Nitrides. J Supercond 18, 47–53 (2005). https://doi.org/10.1007/s10948-005-2149-5
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s10948-005-2149-5