Surface structure, band structure and electrical conductance of Au and Na coadsorbed Si(111)root 3x root 3 reconstruction have been studied in situ with low-energy electron diffraction, scanning tunneling microscopy, angle-resolved photoelectron spectroscopy and four-point probe technique. The Si(111)-h-root 3x root 3-(Au, Na) homogeneous structure has been detected after adsorption of 0.08-0.09 ML of sodium onto the Si(111)-alpha-root 3x root 3-Au reconstructed surface at 350 degrees C. Photoemission spectra show the details of the filling the surface state bands demonstrating the two-dimensional electron gas occurrence. Surface conductivity measurements reveal correlations with electron density changes in surface state bands and its dispersion.
机构:
Chonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea
Chonbuk Natl Univ, Res Inst Phys & Chem, Jeonju 561756, South KoreaChonbuk Natl Univ, Dept Phys, Jeonju 561756, South Korea
机构:
Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, SpainUniv Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Flores, F
Ortega, J
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Ortega, J
Pérez, R
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Pérez, R
Charrier, A
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Charrier, A
Thibaudau, F
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Thibaudau, F
Debever, JM
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
Debever, JM
Themlin, JM
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机构:Univ Autonoma Madrid, Fac Ciencias, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
机构:
Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USAUniv Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
Jiang, Wei
Liu, Zheng
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Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R ChinaUniv Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
Liu, Zheng
Zhou, Miao
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Beihang Univ, Dept Phys, Beijing 100191, Peoples R ChinaUniv Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
Zhou, Miao
Ni, Xiaojuan
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Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USAUniv Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
Ni, Xiaojuan
Liu, Feng
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Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R ChinaUniv Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
机构:
Nagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, JapanNagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan
Yuhara, J
Soda, K
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Nagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, JapanNagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan
Soda, K
Morita, K
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Nagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, JapanNagoya Univ, Sch Engn, Dept Crystalline Mat Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan