POSITRON-ANNIHILATION IN A SINGLE-CRYSTAL OF COSI2 - EXPERIMENT AND THEORY

被引：14

作者：

GARREAU, Y ^{[1
]}

LERCH, P ^{[1
]}

JARLBORG, T ^{[1
]}

WALKER, E ^{[1
]}

GENOUD, P ^{[1
]}

MANUEL, AA ^{[1
]}

PETER, M ^{[1
]}

机构：

[1] UNIV GENEVA, DEPT PHYS MAT CONDENSEE, CH-1211 GENEVA 4, SWITZERLAND

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.43.14532

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two-dimensional angular correlation of (positron) annihilation radiation has been measured in the (100), (110), and (111) planes on a single crystal Of CoSi2. A self-consistent linear-muffin-tin-orbitals band-structure calculation has been performed. Starting with this band structure, different models of annihilation enhancement and an electron-positron correlation potential were used to compute the two-photon momentum density. The comparison between theory and experiment at different stages of analysis is discussed for the various models. Generally speaking, the band-structure approach is found to be in very good agreement with experiment.

引用

页码：14532 / 14539

页数：8

共 36 条

[1] LINEAR METHODS IN BAND THEORY [J].

ANDERSEN, OK .

PHYSICAL REVIEW B, 1975, 12 (08) :3060-3083

[2] POSITRON LIFETIME AND DOPPLER STUDIES OF CO-SI ALLOYS [J].

BALOGH, AG ;

BOTTYAN, L ;

BRAUER, G ;

DEZSI, I ;

MOLNAR, B .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1986, 16 (11) :1725-1730

[3] A SIMPLE APPROACH TOWARDS NON-LOCAL POTENTIALS - THEORY AND APPLICATIONS [J].

BARBIELLINI, B ;

JARLBORG, T .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (45) :8865-8876

[4]

BARBIELLINI B, UNPUB

[5]

BELWELL MO, 1979, POSITRON ANNIHILATIO, P375

[6]

Berko S., 1981, POSITRON SOLID STATE, P64

[7]

BISSON PE, 1982, HELV PHYS ACTA, V55, P100

[8] ELECTRON-POSITRON DENSITY-FUNCTIONAL THEORY [J].

BORONSKI, E ;

NIEMINEN, RM .

PHYSICAL REVIEW B, 1986, 34 (06) :3820-3831

[9] HETEROEPITAXY OF METALLIC AND SEMICONDUCTING SILICIDES ON SILICON [J].

CHERIEF, N ;

CINTI, R ;

DECRESCENZI, M ;

DERRIEN, J ;

NGUYEN, TAT ;

VEUILLEN, JY .

APPLIED SURFACE SCIENCE, 1989, 41-2 :241-252

[10] CORE-LEVEL ELECTRON-ENERGY-LOSS SPECTROSCOPY AS A LOCAL PROBE FOR THE ELECTRONIC-STRUCTURE OF THE CO/SI(111) INTERFACE [J].

DECRESCENZI, M ;

DERRIEN, J ;

CHAINET, E ;

ORUMCHIAN, K .

PHYSICAL REVIEW B, 1989, 39 (08) :5520-5523

← 1 2 3 4 →