DYNAMIC EFFECTS OF THERMAL DIFFUSE-SCATTERING IN RHEED

被引：18

作者：

DUDAREV, SL ^{[1
]}

PENG, LM ^{[1
]}

RYAZANOV, MI ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND

来源：

ACTA CRYSTALLOGRAPHICA SECTION A | 1991年 / 47卷

关键词：

D O I：

10.1107/S0108767390011680

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A general form for the intensity distribution of thermal diffuse scattering (TDS) is derived within the framework of quantum mechanics. The formulation takes into account the dynamical diffraction effects for both the initial and the final states of high-energy electrons and uses a single incoherent scattering approximation. When applied to estimate the intensity distribution of TDS in reflection high-energy electron diffraction (RHEED), using a two-wave approximation for the elastically scattered wave field, an analytical expression is obtained. It is shown that the dynamical diffraction effects may lead to an enhancement in the TDS intensities near the diffraction spots. The influence of correlated thermal atomic displacements on the contrast of the Kikuchi line parallel to the surface shadow edge has been discussed.

引用

页码：170 / 176

页数：7

共 47 条

[1] DYNAMICAL TREATMENT OF THERMAL DIFFUSE SCATTERING OF X-RAYS [J].

AFANASEV, AM ;

KAGAN, Y ;

CHUKHOVS.FN .

PHYSICA STATUS SOLIDI, 1968, 28 (01) :287-&

[2] ROLE OF LATTICE VIBRATIONS IN DYNAMICAL THEORY OF X-RAYS [J].

AFANASEV, AM ;

KAGAN, Y .

ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1968, A 24 :163-&

[3] ORIGIN AND STRUCTURE OF STREAKS IN REFLECTION HIGH-ENERGY ELECTRON-DIFFRACTION EXPERIMENTS [J].

AGRAWAL, BK .

PHYSICAL REVIEW B, 1984, 30 (08) :4412-4416

[4] SURFACE PHONONS OF HYDROGEN ON TUNGSTEN [J].

AGRAWAL, BK ;

DJAFARIROUHANI, B ;

DOBRZYNSKI, L .

SURFACE SCIENCE, 1979, 89 (1-3) :446-456

[5]

ALBRECHT M, 1988, REFLECTION HIGH ENER, P211

[6]

[Anonymous], 2012, DENSITY MATRIX THEOR

[7] PHASE DEPENDENCE OF KIKUCHI PATTERNS .1. THEORY [J].

BIRD, DM ;

WRIGHT, AG .

ACTA CRYSTALLOGRAPHICA SECTION A, 1989, 45 :104-109

[8]

CASE KM, 1967, LINEAR TRANSPORT THE

[9]

Chandrasekhar S., 1950, RAD TRANSFER

[10] DYNAMICAL TREATMENT OF KIKUCHI PATTERNS [J].

CHUKHOVSKII, FN ;

ALEXANJA.LA ;

PINSKER, ZG .

ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 1973, 29 (JAN1) :38-45

← 1 2 3 4 5 →