Physical review. B, Condensed matter · 1996 · 38 citations · 11 references
Natural SciencesMaterials EngineeringMaterials ScienceCondensed Matter PhysicsElectronic MaterialsSurface ScienceScanning Probe MicroscopySemiconductor SurfacesSurface Chemistry Of SolidsSurface CrystallographySurface MorphologySurface PhysicsAtomic-resolution ImagingCappingMetalorganic Vapor Phase EpitaxyNon-thermal DesorptionSandwich StructuresScanning Tunneling SpectroscopySurface GrowthSurface States
In this study we report on an investigation of the microscopic structure of InP(001) surfaces grown by metal-organic vapor-phase epitaxy (MOVPE). InP(001) homoepitaxial layers were grown in a MOVPE reactor and capped in situ with a P/As sandwich layer by photodecomposition of the phosphine and arsine precursors in the gas phase. The passivated samples were transferred through atmosphere into a separate UHV system. After thermal desorption of the capping layers, a clear (2\ifmmode\times\else\texttimes\fi{}4) LEED pattern was achieved. STM images show large, flat surface areas. Images with atomic resolution reveal a (2\ifmmode\times\else\texttimes\fi{}4) surface structure corresponding to an In-rich surface. The microscopic surface structure is discussed in the light of recently proposed structure models.
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Composition and structure of the InP{100}- (1 × 1) and -(4 × 2) surfaces
Myung Mo Sung, C. Kim, H. Bu et al. · Surface Science · 1995 · 56 citations
Natural Sciences, Materials Engineering, Materials Science +10