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- W2024777158 abstract "We present an ab initio study of the diffusion of Ge adatoms and the disordering of Ge(111)-c(2ifmmodetimeselsetexttimesfi{}8) at ensuremath{sim}300 ifmmode^circelsetextdegreefi{}C. In the absence of adatom vacancies, we find that the most likely diffusion mechanism is an anisotropic correlated process in which several adatoms of a [11ifmmodebarelsetextasciimacronfi{}0] row hop concertedly along the same row. When surface vacancies are present, adatoms can instead hop one by one along [11ifmmodebarelsetextasciimacronfi{}0] in an uncorrelated way. Anisotropy arises from the special bonding topology of the c(2ifmmodetimeselsetexttimesfi{}8) structure. Calculated scanning tunneling microscopy images of the diffusion process show that adatom jumps are accompanied by an important electron backflow." @default.
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- W2024777158 title "Adatom diffusion and disordering at the Ge(111)-<i>c</i>(2×8)–(1×1) surface transition" @default.
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- W2024777158 doi "https://doi.org/10.1103/physrevb.49.10757" @default.
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