Warning: Table './science/watchdog' is marked as crashed and should be repaired
query: INSERT INTO watchdog
(uid, type, message, variables, severity, link, location, referer, hostname, timestamp)
VALUES
(0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:7:\"warning\";s:8:\"%message\";s:138:\"realpath(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/var/www/html/science/science.uni-obuda.hu)\";s:5:\"%file\";s:60:\"/var/www/html/science/science.uni-obuda.hu/includes/file.inc\";s:5:\"%line\";i:200;}', 3, '', 'http://science.uni-obuda.hu/en/node/4911', '', '216.73.216.56', 1749470628) in /var/www/html/science/science.uni-obuda.hu/includes/database.mysql.inc on line 135
Warning: Table './science/watchdog' is marked as crashed and should be repaired
query: INSERT INTO watchdog
(uid, type, message, variables, severity, link, location, referer, hostname, timestamp)
VALUES
(0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:7:\"warning\";s:8:\"%message\";s:138:\"realpath(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/var/www/html/science/science.uni-obuda.hu)\";s:5:\"%file\";s:60:\"/var/www/html/science/science.uni-obuda.hu/includes/file.inc\";s:5:\"%line\";i:200;}', 3, '', 'http://science.uni-obuda.hu/en/node/4911', '', '216.73.216.56', 1749470628) in /var/www/html/science/science.uni-obuda.hu/includes/database.mysql.inc on line 135
Interpretation of the depth-dependent etch-pit density in InGaAs/GaAs heterostructures | science.uni-obuda.hu
PHYSICA STATUS SOLIDI C-CONFERENCES AND CRITICAL REVIEWS
Issue
3
Pagination
893 - 896
Date Published
2003
Publication Language
eng
Abstract
We study the defect structure of MBE-grown (100) InGaAs/GaAsmismatched heteroepitaxial layers by selective electrochemical
(anodic) etching. By incremental layer removal, we map the
depth profile of the etch pit density. The defect density is
inversely proportional to the layer thickness and increases
with In content. The results are explained by a quantitative
theoretical model of threading dislocation annihilation. The
importance of the layer residual strain in the annihilation
process is shown.
Who's online
There are currently 0 users and 165 guests online.