Open AccessSurface reconstructions and the local magnetic moments in Mn/GaAs(001) system
Author(s) -
张立新,
王恩哥
Publication year - 2006
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.55.142
Subject(s) - magnetic moment , surface (topology) , electron , condensed matter physics , materials science , local density of states , moment (physics) , atomic physics , surface states , physics , nuclear physics , quantum mechanics , geometry , mathematics
First principles calculations have been used to study the various surface reconstructions, local density of states of surface atoms, and the local magnetic moments of the Mn constituents in Mn/GaAs(001) surface. It is found that the Mn atoms will act as donors and donate as many electrons as required by the GaAs surface. The local magnetic moment of Mn being an important factor in surface magnetic properties can be deduced directly from the reconstruction by electron counting.