Surface reconstructions and surface energies of monolayer-coverage cation-terminated Ga sub 0. 5 In sub 0. 5 P(001) surfaces

Conference · · Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States)

OSTI ID:7237532

Froyen, S; Zunger, A ^[1]

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1. Solar Energy Research Inst., Golden, CO (United States)

Using the first-principles pseudopotential method the authors have studied the fully covered cation-terminated (001) surfaces of Ga{sub 0.5}In{sub 0.5}P alloys. They found that among several possible Ga and In surface patterns (within a 2 {times} 2 unit cell), the one corresponding to TuPt-like bulk ordering is stabilized by {approximately}100 meV per surface atom. This structure has been observed experimentally in thick films, yet is known to be bulk unstable. The stability of a CuPt-like surface layer is related to electronically driven surface reconstructions - dimerization, buckling, and tilting - which are discussed in detail.

• OSTI ID: 7237532
• Report Number(s): CONF-910115-; CODEN: JVTBD
• Journal Information: Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States), Vol. 9:4; Conference: 18. annual conference on physics and chemistry of semiconductor interfaces, Long Beach, CA (United States), 29 Jan - 1 Feb 1991; ISSN 0734-211X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
GALLIUM PHOSPHIDES
DIMERIZATION
ELECTRONIC STRUCTURE
INDIUM PHOSPHIDES
BUCKLING
CRYSTAL LATTICES
INSTABILITY
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
GALLIUM COMPOUNDS
INDIUM COMPOUNDS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
POLYMERIZATION
400201* - Chemical & Physicochemical Properties
360606 - Other Materials- Physical Properties- (1992-)