oxygen;
faceting;
silicon;
low energy electron diffraction (LEED);
angle resolved photoemission;
D O I:
10.1016/S0039-6028(03)00570-3
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
We report the formation of Si(1 1 3)-3 x 2 facets upon exposing oxygens on the Si(5 5 12) surface at an elevated temperature. These facets are found to form only for a limited range of oxygen exposure and exhibit a well-defined 3 x 2 LEED pattern. We also find the surface electronic state unique only to the facets in the valence band. The spectral feature of these electronic states and the behavior of a (1/3 1/2) LEED spot upon oxygen contents in the facets indicate that the formation is a heterogeneous mixture of the clean Si(1 1 3) facets free of oxygens and other facets containing oxygen atoms. (C) 2003 Elsevier Science B.V. All rights reserved.
机构:
Korea Res Inst Stand & Sci, Daejeon 305340, South KoreaKorea Res Inst Stand & Sci, Daejeon 305340, South Korea
Cho, Sanghee
Zhang, J.
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机构:
Yunnam Univ, Dept Phys, Kunming 650091, Yunnan, Peoples R ChinaKorea Res Inst Stand & Sci, Daejeon 305340, South Korea
Zhang, J.
Seo, Jae M.
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机构:
Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea
Chonbuk Natl Univ, Inst Photon & Informat Technol, Jeonju 561756, South KoreaKorea Res Inst Stand & Sci, Daejeon 305340, South Korea
机构:
Chonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
Chonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 561756, South KoreaChonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
Hahn, Jae Ryang
Bharath, Satyaveda C.
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N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USAChonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
Bharath, Satyaveda C.
Kim, Gyu-Hyeong
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Chonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 561756, South Korea
Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South KoreaChonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
Kim, Gyu-Hyeong
Jeong, Sukmin
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Chonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 561756, South Korea
Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South KoreaChonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
Jeong, Sukmin
Pearl, Thomas P.
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N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USAChonbuk Natl Univ, Dept Chem, Jeonju 561756, South Korea
机构:
Natl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, IndiaNatl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, India
Krishna, Shibin T. C.
Deshmukh, Rahul
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CUNY, Grad Ctr, Dept Phys, New York, NY 10016 USANatl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, India
Deshmukh, Rahul
Chauhan, Amit Kumar Singh
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Natl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, IndiaNatl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, India
Chauhan, Amit Kumar Singh
Goswami, Lalit
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Natl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, IndiaNatl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, India
Goswami, Lalit
Govind
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Natl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, IndiaNatl Phys Lab, CSIR, Phys Energy Harvesting Div, Dr KS Krishnan Rd, New Delhi 110012, India