Magic angle in electron energy loss spectra: Relativistic and dielectric corrections

被引：13

作者：

Sorini, A. P. ^{[1
]}

Rehr, J. J. ^{[1
]}

Levine, Z. H. ^{[2
]}

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.77.115126

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently, it has been demonstrated that a careful treatment of both longitudinal and transverse matrix elements in electron energy loss spectra can explain the mystery of relativistic effects on the magic angle. Here, we show that there is an additional correction of order (Z alpha)(2), where Z is the atomic number and alpha the fine structure constant, which is not necessarily small for heavy elements. Moreover, we suggest that macroscopic electrodynamic effects can give further corrections which can break the sample independence of the magic angle.

引用

页数：10

共 23 条

[11] Comment on "Experimental and theoretical evidence for the magic angle in transmission electron energy loss spectroscopy" by H.!Daniels, A.!Brown, A.!Scott, T.!Nichells, B.!Rand and R.!Brydson [J].