Matches in SemOpenAlex for { <https://semopenalex.org/work/W3025485672> ?p ?o ?g. }
- W3025485672 abstract "The passage of an electric current in a material can cause a biased mass transport at its surface. This migration phenomenon is intimately related to the microscopic details of atomic processes of diffusion and attachment/detachment at step edges. Using low-energy electron microscopy, we have examined in operando under an electric current the migration of $mathrm{Si}(111)text{ensuremath{-}}1ifmmodetimeselsetexttimesfi{}1$ advacancy islands confined on $mathrm{Si}(111)text{ensuremath{-}}7ifmmodetimeselsetexttimesfi{}7$ terraces. The islands move opposite to the current direction, with velocity increasing with the radius. The effective valence of Si adatoms is $2.8ifmmodepmelsetextpmfi{}0.5$ and the kinetic length of attachment-detachment is about 500 nm. The analysis of the island's shape reveals that the electric current significantly biases the kinetic rate of mass transfers at step edges modifying the overall island's shape." @default.
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- W3025485672 date "2020-12-09" @default.
- W3025485672 modified "2023-10-14" @default.
- W3025485672 title "Electric forces on a confined advacancy island" @default.
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- W3025485672 doi "https://doi.org/10.1103/physrevb.102.235412" @default.
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