| Autor: |
Joaquim Mendes, E. H. C. P. Sinnecker, M. M. Sant’Anna, Tatiana G. Rappoport, D. E. R. Souza, Germano Maioli Penello, Mauricio P. Pires, S.L.A. Mello, Xiaofeng Liu, Jacek K. Furdyna |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 273:72-75 |
| ISSN: |
0168-583X |
| Popis: |
We explore an analogy between (i) beam attenuation in projectile-electron-loss cross section measurements and (ii) beam-induced exponential decay of magnetization in Ga 1− x Mn x As. Cross sections are experimentally determined to quantify the effect of the passage of a projectile through a thin film of Ga 1− x Mn x As and the displacement of a Mn atom substitutional to Ga. The Mn Ga atoms have magnetic properties that are used in this work to selectively access ion–Mn collisions while ignoring interactions between projectile and the rest of solid atoms. The physical interpretation of these measured cross sections is discussed considering the roles played by direct projectile–Mn interactions and by energetic recoils. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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