A computer-controlled setup for studying spin-polarized electron photoemission

被引：9

作者：

Yashin, YP ^{[1
]}

Ambrajei, AN ^{[1
]}

Mamaev, YA ^{[1
]}

机构：

[1] St Petersburg State Tech Univ, St Petersburg 195251, Russia

来源：

INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2000年 / 43卷 / 02期

关键词：

Quantum Yield; Buffer Layer; Heavy Hole; Fuse Quartz; Detector Chamber;

D O I：

10.1007/BF02759215

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The setup is intended for studying spectral dependences of the quantum yield and the degree of polarization of a beam of photoelectrons emitted from semiconductor heterostructures irradiated by circularly polarized light in a wavelength range of 360-1200 nm. The beam polarization vector direction can be reversed without affecting the main electron-optical features of the beam. The polarization of electrons is measured by a mini-Mott polarimeter with an operating voltage of 30 kV. The vacuum setup has a load-lock system for quick loading of samples and a cryostat. The setup is fully computer-controlled. Electron beams with a polarization of up to 88% were obtained with photocathodes at room temperature.

引用

页码：245 / 251

页数：7