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Effect of Chemical Passivation of GaAs(001) Surface on Anisotropy and Orientation of Gold Nanoclusters Formed on It and Their Plasmons
The principal role of chemical passivation of GaAs surface in the formation on it of oriented anisotropic nanoclusters of gold is discussed. The nanoclusters are fabricated by thermal annealing of a gold film deposited onto GaAs(001) surface passivated as a preliminary by a monolayer of nitrogen or...
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Published in: | Semiconductors (Woodbury, N.Y.) N.Y.), 2023-04, Vol.57 (4), p.216-220 |
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creator | Berkovits, V. L. Kosobukin, V. A. Ulin, V. P. Alekseev, P. A. Soldatenkov, F. Yu Levitskii, V. A. |
description | The principal role of chemical passivation of GaAs surface in the formation on it of oriented anisotropic nanoclusters of gold is discussed. The nanoclusters are fabricated by thermal annealing of a gold film deposited onto GaAs(001) surface passivated as a preliminary by a monolayer of nitrogen or sulfur atoms. These atoms, bonded chemically to gallium atoms of the crystal surface, form a crystal lattice and prevent the chemical interaction of Au with GaAs. As a result of annealing, the arrays of anisotropic (elongated) nanoclusters of chemically pure Au oriented preferably in crystal
direction are formed on passivated GaAs(001) surface. The presence of strong anisotropy and orientation of Au clusters on passivated GaAs surfaces is established by the methods of probe diagnostics and of optical reflectance anisotropy spectroscopy and polarized reflection spectroscopy. Using an optical model of plasmonic polarizability of elongated Au spheroids, it is shown that the spectral features observed in polarized reflection originate from anisotropic plasmons of Au nanoclusters polarized mainly in direction
of crystal. |
doi_str_mv | 10.1134/S1063782623070060 |
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direction are formed on passivated GaAs(001) surface. The presence of strong anisotropy and orientation of Au clusters on passivated GaAs surfaces is established by the methods of probe diagnostics and of optical reflectance anisotropy spectroscopy and polarized reflection spectroscopy. Using an optical model of plasmonic polarizability of elongated Au spheroids, it is shown that the spectral features observed in polarized reflection originate from anisotropic plasmons of Au nanoclusters polarized mainly in direction
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direction are formed on passivated GaAs(001) surface. The presence of strong anisotropy and orientation of Au clusters on passivated GaAs surfaces is established by the methods of probe diagnostics and of optical reflectance anisotropy spectroscopy and polarized reflection spectroscopy. Using an optical model of plasmonic polarizability of elongated Au spheroids, it is shown that the spectral features observed in polarized reflection originate from anisotropic plasmons of Au nanoclusters polarized mainly in direction
of crystal.</description><subject>Anisotropy</subject><subject>Annealing</subject><subject>Chemical bonds</subject><subject>Crystal lattices</subject><subject>Crystal surfaces</subject><subject>Gallium arsenide</subject><subject>Gold</subject><subject>Magnetic Materials</subject><subject>Magnetism</subject><subject>Nanoclusters</subject><subject>Nitrogen</subject><subject>Optical properties</subject><subject>Passivity</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Plasmons</subject><subject>Reflectance anisotropy spectroscopy</subject><subject>Reflection</subject><subject>Spectrum analysis</subject><subject>Sulfur compounds</subject><issn>1063-7826</issn><issn>1090-6479</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp1kU1LAzEQhhdRsFZ_gLeAFz1szVezu8dSai0UW2g9L9l8tCnbpCZboX_A323WFXoQyWHCO-8zycwkyT2CA4QIfV4hyEiWY4YJzCBk8CLpIVjAlNGsuGzvjKRt_jq5CWEHIUL5kPaSr4nWSjTAaTDeqr0RvAZLHoL55I1xttWnfBQeI_AEVkevuVAg6iNrgmu8O5wAtxIsvFG2OSOuluCNWyfqY2iUD-DF-b2SLTlrfoj1VhkPljUPe2fDbXKleR3U3W_sJ-8vk_X4NZ0vprPxaJ6K2FaTIsQyhiXVkKiqEhQLVCmJdVVIXuACYYkFphJpFmciKp1nBWW0whTyjGqCST956OoevPs4qtCUO3f0Nj5Z4mLIsnyY02F0DTrXhteqNFbHTrmIR7YTclZpE_VRljNCSE7zCKAOEN6F4JUuD97suT-VCJbtfso_-4kM7pgQvXaj_Pkr_0PfS4mQuQ</recordid><startdate>20230401</startdate><enddate>20230401</enddate><creator>Berkovits, V. L.</creator><creator>Kosobukin, V. A.</creator><creator>Ulin, V. P.</creator><creator>Alekseev, P. A.</creator><creator>Soldatenkov, F. Yu</creator><creator>Levitskii, V. A.</creator><general>Pleiades Publishing</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20230401</creationdate><title>Effect of Chemical Passivation of GaAs(001) Surface on Anisotropy and Orientation of Gold Nanoclusters Formed on It and Their Plasmons</title><author>Berkovits, V. L. ; Kosobukin, V. A. ; Ulin, V. P. ; Alekseev, P. A. ; Soldatenkov, F. Yu ; Levitskii, V. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c307t-116762d4f03ebbc42c1bed2fb9da92912d2c24d1f6134cbf879464b240a74f323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Anisotropy</topic><topic>Annealing</topic><topic>Chemical bonds</topic><topic>Crystal lattices</topic><topic>Crystal surfaces</topic><topic>Gallium arsenide</topic><topic>Gold</topic><topic>Magnetic Materials</topic><topic>Magnetism</topic><topic>Nanoclusters</topic><topic>Nitrogen</topic><topic>Optical properties</topic><topic>Passivity</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Plasmons</topic><topic>Reflectance anisotropy spectroscopy</topic><topic>Reflection</topic><topic>Spectrum analysis</topic><topic>Sulfur compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berkovits, V. L.</creatorcontrib><creatorcontrib>Kosobukin, V. A.</creatorcontrib><creatorcontrib>Ulin, V. P.</creatorcontrib><creatorcontrib>Alekseev, P. A.</creatorcontrib><creatorcontrib>Soldatenkov, F. Yu</creatorcontrib><creatorcontrib>Levitskii, V. A.</creatorcontrib><collection>CrossRef</collection><jtitle>Semiconductors (Woodbury, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berkovits, V. L.</au><au>Kosobukin, V. A.</au><au>Ulin, V. P.</au><au>Alekseev, P. A.</au><au>Soldatenkov, F. Yu</au><au>Levitskii, V. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Chemical Passivation of GaAs(001) Surface on Anisotropy and Orientation of Gold Nanoclusters Formed on It and Their Plasmons</atitle><jtitle>Semiconductors (Woodbury, N.Y.)</jtitle><stitle>Semiconductors</stitle><date>2023-04-01</date><risdate>2023</risdate><volume>57</volume><issue>4</issue><spage>216</spage><epage>220</epage><pages>216-220</pages><issn>1063-7826</issn><eissn>1090-6479</eissn><abstract>The principal role of chemical passivation of GaAs surface in the formation on it of oriented anisotropic nanoclusters of gold is discussed. The nanoclusters are fabricated by thermal annealing of a gold film deposited onto GaAs(001) surface passivated as a preliminary by a monolayer of nitrogen or sulfur atoms. These atoms, bonded chemically to gallium atoms of the crystal surface, form a crystal lattice and prevent the chemical interaction of Au with GaAs. As a result of annealing, the arrays of anisotropic (elongated) nanoclusters of chemically pure Au oriented preferably in crystal
direction are formed on passivated GaAs(001) surface. The presence of strong anisotropy and orientation of Au clusters on passivated GaAs surfaces is established by the methods of probe diagnostics and of optical reflectance anisotropy spectroscopy and polarized reflection spectroscopy. Using an optical model of plasmonic polarizability of elongated Au spheroids, it is shown that the spectral features observed in polarized reflection originate from anisotropic plasmons of Au nanoclusters polarized mainly in direction
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subjects | Anisotropy Annealing Chemical bonds Crystal lattices Crystal surfaces Gallium arsenide Gold Magnetic Materials Magnetism Nanoclusters Nitrogen Optical properties Passivity Physics Physics and Astronomy Plasmons Reflectance anisotropy spectroscopy Reflection Spectrum analysis Sulfur compounds |
title | Effect of Chemical Passivation of GaAs(001) Surface on Anisotropy and Orientation of Gold Nanoclusters Formed on It and Their Plasmons |
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