ZnSe(100) surface: Atomic configurations, composition, and surface dipole

W. Chen, A. Kahn, P. Soukiassian, P. S. Mangat, J. Gaines, C. Ponzoni, D. Olego

Research output: Contribution to journalArticlepeer-review

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Abstract

Chemical composition, core-level line shape, and electron affinity measurements are performed on the Se-terminated (2×1) and Zn-terminated c(2×2) ZnSe(100) surfaces. The (2×1) reconstruction corresponds to a complete monolayer of Se dimers with one filled dangling bond per surface atom. The c(2×2) reconstruction corresponds to a half-monolayer vacancy structure which leaves twofold-coordinated Zn atoms in the top layer. The 150-meV decrease in surface electron affinity at the (2×1)→c(2×2) transition is consistent with this model and results from a dipole induced by the charge transfer required to empty and fill all cation and anion dangling bonds on the c(2×2) surface, respectively.

Original languageEnglish (US)
Pages (from-to)10790-10793
Number of pages4
JournalPhysical Review B
Volume49
Issue number15
DOIs
StatePublished - Jan 1 1994

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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