Information on ion-solid interactions obtained through magnetization measurements

被引：1

作者：

Sant'Anna, M. M. ^{[1
]}

Rappoport, T. G. ^{[1
]}

Sinnecker, E. H. C. P. ^{[1
]}

Pires, M. P. ^{[1
]}

Penello, G. M. ^{[1
]}

Souza, D. E. R. ^{[1
]}

Mello, S. L. A. ^{[1
]}

Mendes, J. B. S. ^{[1
]}

Furdyna, J. K. ^{[2
]}

Liu, X. ^{[2
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941909 Rio De Janeiro, Brazil

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2012年 / 273卷

基金：

美国国家科学基金会;

关键词：

Cross section; Ion-solid collision; Ion-atom collision; Ion-beam irradiation; GaMnAs;

D O I：

10.1016/j.nimb.2011.07.042

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We explore an analogy between (i) beam attenuation in projectile-electron-loss cross section measurements and (ii) beam-induced exponential decay of magnetization in Ga1-xMnxAs. Cross sections are experimentally determined to quantify the effect of the passage of a projectile through a thin film of Ga1-xMnxAs 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. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：72 / 75

页数：4