TY - JOUR
TI - Origin of low-temperature magnetic ordering in Ga 1-xMn xN
AU - Sawicki, M.
AU - Devillers, T.
AU - Gałȩski, S.
AU - Simserides, C.
AU - Dobkowska, S.
AU - Faina, B.
AU - Grois, A.
AU - Navarro-Quezada, A.
AU - Trohidou, K.N.
AU - Majewski, J.A.
AU - Dietl, T.
AU - Bonanni, A.
JO - PHYSICAL REVIEW B : CONDENSED MATTER AND MATERIALS PHYSICS
PY - 2012
VL - 85
TODO - 20
SP - null
PB - 
SN - 1098-0121
TODO - 10.1103/PhysRevB.85.205204
TODO - null
TODO - By using highly sensitive millikelvin superconducting quantum interference device magnetometry, the magnitude of the Curie temperature as a function of the Mn concentration x is determined for thoroughly characterized Ga 1-xMn xN. 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 point out the limited accuracy of state-of-the-art ab initio methods in predicting the magnetic characteristics of dilute magnetic insulators. © 2012 American Physical Society.
ER -