Origin of low-temperature magnetic ordering in Ga1-xMnxN

Autor:	Sawicki, M., Devillers, T., Gałȩski, S., Simserides, C., Dobkowska, S., Faina, B., Grois, A., Navarro-Quezada, A., Trohidou, K. N., Majewski, J. A., Dietl, T., Bonanni, A.
Rok vydání:	2012
Předmět:	Condensed Matter - Materials Science
Zdroj:	Phys. Rev. B 85, 205204 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.85.205204
Popis:	By employing highly sensitive millikelvin SQUID magnetometry, the magnitude of the Curie temperature as a function of the Mn concentration x is determined for thoroughly characterized Ga1-xMnxN. The interpretation of the results in the frame of tight binding theory and of Monte Carlo simulations, allows us to assign the spin interaction to ferromagnetic superexchange and to benchmark the accuracy of state-of-the-art ab initio methods in predicting the magnetic characteristics of dilute magnetic insulators. Comment: 4+ pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1202.6233 Zobrazit plný text záznamu View this record from Arxiv