期刊论文详细信息
Origin of low-temperature magnetic ordering in Ga1-xMnxN | |
Article | |
关键词: FERROMAGNETISM; SUPEREXCHANGE; GAN; SEMICONDUCTORS; MODEL; | |
DOI : 10.1103/PhysRevB.85.205204 | |
来源: SCIE |
【 摘 要 】
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 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 point out the limited accuracy of state-of-the-art ab initio methods in predicting the magnetic characteristics of dilute magnetic insulators.
【 授权许可】
Free