Positron wave-function effects in the measurement of the two-dimensional angular correlation of the annihilation radiation of a spin-polarized system

Jan Rusz; Maurizio Biasini

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Positron wave-function effects in the measurement of the two-dimensional angular correlation of the annihilation radiation of a spin-polarized system

机译：正电子波函数效应对自旋极化系统the灭辐射二维角相关性的测量

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In positron annihilation studies of the electronic structure of metals, a nonuniform positron density can distort significantly the faithful detection of the Fermi surface. Recently, we have predicted a nearly complete cancellation of the aforementioned distortion in the spin-polarized two-dimensional angular correlation of annihilation radiation experiment on CrO_2 [M. Biasini and J. Rusz, J. Phys.: Condens. Matter 18, L289 (2006)]. We provide a detailed investigation of the predicted effect on several transition-element- and actinide-based systems of increasing complexity, demonstrating that the cancellation effect is of rather general nature.

机译：在金属电子结构的正电子an没研究中，不均匀的正电子密度会严重扭曲对费米表面的忠实检测。最近，我们已经预测了在CrO_2 [M.上的an灭辐射实验的自旋极化二维角相关性中几乎完全消除了上述畸变。 Biasini和J. Rusz，《物理学报》：Condens。 Matter 18，L289（2006）]。我们提供了对几种复杂性日益增加的基于过渡元素和act系元素的系统的预测效果的详细研究，表明消除效果具有相当普遍的性质。

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来源
《Physical review》 |2007年第23期|235115.1-235115.9|共9页
作者
Jan Rusz; Maurizio Biasini;
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作者单位

Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
fermi surface: calculations and measurements; effective mass; G factor; strongly correlated electron systems; heavy fermions; positron states; positron annihilation;

机译：费米表面：计算和测量;有效质量G因子;强相关电子系统;重费米子正电子状态;正电子an灭;

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专利

1. Spin-polarized positron annihilation measurements of polycrystalline Fe, Co, Ni, and Gd based on Doppler broadening of annihilation radiation [J] . Atsuo Kawasuso, Masaki Maekawa, Yuki Fukaya, Physical review . 2011,第10期

机译：基于an灭辐射的多普勒展宽测量多晶Fe，Co，Ni和Gd的自旋极化正电子an灭
2. Fermi-surface reconstruction from two-dimensional angular correlation of positron annihilation radiation (2D-ACAR) data using maximum-likelihood fitting of wavelet-like functions [J] . Major AG., Dugdale SB., Alam MA., Journal of Physics. Condensed Matter . 1998,第46期

机译：利用小波类函数的最大似然拟合从正电子radiation没辐射的二维角相关数据重建费米表面
3. DIFFRACTION PATTERN OF A DEFECT - TWO-DIMENSIONAL ANGULAR CORRELATION OF POSITRON-ANNIHILATION RADIATION STUDIES OF DEFECTS IN SEMICONDUCTORS [J] . Mcmullen T., Bishop MF. Physical Review, B. Condensed Matter . 1997,第7期

机译：二维缺陷正电子角化辐射角相关的衍射图谱
4. Effects of Neutron Irradiation on Fe-Cu Model Alloys and RPV Steels Probed by Positron Annihilation and Hardness Measurements [C] . Angela Hemple, Masaaki Saneyasu, Zheng Tang, International symposium on effects of radiation on materials . 2000

机译：用正电子ni没和硬度测量探测中子辐照对Fe-Cu模型合金和RPV钢的影响
5. Application of positron annihilation induced auger electron spectroscopy in measurements of interface defects and the stability of ultra-thin aluminum films grown on gallium arsenide(100) [D] . Chen, Wu-Chi 2000

机译：正电子an没螺旋钻电子光谱在砷化镓上生长的界面缺陷和超薄铝膜的稳定性测量中的应用（100）
6. Correlation of Gas Permeability in a Metal-Organic Framework MIL-101(Cr)–Polysulfone Mixed-Matrix Membrane with Free Volume Measurements by Positron Annihilation Lifetime Spectroscopy (PALS) [O] . Harold B. Tanh Jeazet, Tönjes Koschine, Claudia Staudt, 2013

机译：金属有机骨架MIL-101（Cr）-聚砜混合基质膜中气体渗透率与正电子An没寿命光谱法（PALS）测量的自由体积的相关性
7. Positron Two-dimensional Angular Correlation of Annihilation Radiation System Using 256 Bi4Ge3O12 Individual Detectors [O] . Takao KAWANO, Ryoichi SUZUKI, Yoji MIZUHARA, 1990

机译：使用256 Bi4Ge3O12个单独探测器的正电子二维角度湮灭辐射系统的相关性
8. Momentum Density Measurements by Positron Annihilation in Metals and Alloys: Recent Experiments with a Multicounter Two-Dimensional Angular Correlation Apparatus. [R] . Berko, S., Mader, J. 1974

机译：金属和合金中正电子湮灭的动量密度测量：多组件二维角度相关装置的最新实验。

Positron wave-function effects in the measurement of the two-dimensional angular correlation of the annihilation radiation of a spin-polarized system

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