Design and performance of a spin-polarized electron energy loss spectrometer with high momentum resolution

被引：5

作者：

Vasilyev, D. ^{[1
]}

Kirschner, J. ^{[1
]}

机构：

[1] Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 08期

关键词：

STONER EXCITATION SPECTRUM; LOSS SPECTROSCOPY; INELASTIC-SCATTERING; EXCHANGE SCATTERING; LARGE ENHANCEMENT; GAAS; PHOTOELECTRONS;

D O I：

10.1063/1.4961471

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe a new "complete" spin-polarized electron energy loss spectrometer comprising a spin-polarized primary electron source, an imaging electron analyzer, and a spin analyzer of the "spin-polarizing mirror" type. Unlike previous instruments, we have a high momentum resolution of less than 0.04 angstrom(-1), at an energy resolution of 90-130 meV. Unlike all previous studies which reported rather broad featureless data in both energy and angle dependence, we find richly structured spectra depending sensitively on small changes of the primary energy, the kinetic energy after scattering, and of the angle of incidence. The key factor is the momentum resolution. Published by AIP Publishing.

引用

页数：6

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