Spin polarized photoemission from thin GaAs photocathodes

被引：5

作者：

Pelucchi, E

DeRossi, S

Ciccacci, F

机构：

[1] INFM- Dipartimento di Fisica, Politecnico di Milano, I-20133 Milano

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1995年 / 76卷

关键词：

D O I：

10.1016/0368-2048(95)02510-3

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The spin polarization of electrons photoemitted from negative electron affinity (NEA) thin GaAs photocathodes has been measured by means of Mott scattering. Thin epitaxial layers have been grown on different substrates with either small or large lattice mis-match. In this last case the layer results considerably strained allowing the emission of highly (more than 50%) polarized electrons. The effect of the strain relaxation due to sample annealing on the beam polarization is also discussed.

引用

页码：505 / 509

页数：5

共 15 条

[1] COMPARATIVE-STUDY OF THE PREPARATION OF NEGATIVE ELECTRON-AFFINITY GAAS PHOTOCATHODES WITH O-2 AND WITH NF-3 [J].

CICCACCI, F ;

CHIAIA, G .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1991, 9 (06) :2991-2995

[2] SPIN-POLARIZED ELECTRON-GUN FOR ELECTRON SPECTROSCOPIES [J].

CICCACCI, F ;

VESCOVO, E ;

CHIAIA, G ;

DEROSSI, S ;

TOSCA, M .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1992, 63 (06) :3333-3338

[3] GAAS/ALAS MONOLAYER SUPERLATTICES - A NEW CANDIDATE FOR A HIGHLY SPIN-POLARIZED ELECTRON SOURCE [J].

CICCACCI, F ;

MOLINARI, E ;

CHRISTENSEN, NE .

SOLID STATE COMMUNICATIONS, 1987, 62 (01) :1-3

[4]

CICCACCI F, 1995, IN PRESS REV SCI INS

[5]

Kessler J., 1985, POLARIZED ELECTRONS

[6]

KISKER E, 1992, ANGLE RESOLVED PHOTO, P469

[7] ELECTRON-SPIN POLARIZATION IN PHOTOEMISSION FROM STRAINED GAAS GROWN ON GAAS1-XPX [J].

MARUYAMA, T ;

GARWIN, EL ;

PREPOST, R ;

ZAPALAC, GH .

PHYSICAL REVIEW B, 1992, 46 (07) :4261-4264

[8] OBSERVATION OF STRAIN-ENHANCED ELECTRON-SPIN POLARIZATION IN PHOTOEMISSION FROM INGAAS [J].

MARUYAMA, T ;

GARWIN, EL ;

PREPOST, R ;

ZAPALAC, GH ;

SMITH, JS ;

WALKER, JD .

PHYSICAL REVIEW LETTERS, 1991, 66 (18) :2376-2379

[9]

MARUYAMA T, 1988, APPL PHYS LETT, V55, P1686

[10] SPIN-POLARIZED ELECTRONS FROM INXGA1-XAS THIN-FILMS [J].

MEIER, F ;

GROBLI, JC ;

GUARISCO, D ;

VATERLAUS, A ;

YASHIN, Y ;

MAMAEV, Y ;

YAVICH, B ;

KOCHNEV, I .

PHYSICA SCRIPTA, 1993, T49B :574-578

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