Open AccessHYDROGEN ADSORPTION INDUCED PHASE TRANSITIONS ON Si(100) STUDIED BY LEED
Author(s) -
胡晓明,
林彰达
Publication year - 1996
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.45.985
Subject(s) - hydrogen , adsorption , materials science , nitrogen , low energy electron diffraction , saturation (graph theory) , liquid nitrogen , phase (matter) , diffraction , analytical chemistry (journal) , electron diffraction , atomic physics , chemistry , optics , physics , mathematics , organic chemistry , chromatography , combinatorics
Phase transitions on a clean reconstructed Si(100)-c(8×8) surface induced by atomic hydrogen adsorption at different temperatures have been studied using low energy electron diffraction (LEED) . It has been found that: at liquid nitrogen temperature, successive dosing of atomic hydrogen cause the surface go through a series of phase transitions from c(8×8)to(4×l)-H to(2×l)-H and finally to (1×1)- H. At different temperatures from 700×3 down to room temperature, successive saturation doses of atomic hydrogen can induce phase transitions from c(8×8)to c(4×4)-H to (2×1)-H and finally to(1×1)-H.