| 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. |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
