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    題名: Growth and characterization of InN thin film by metal-organic vcapor phase epitaxy (MOVPE) on different buffers
    作者: Chang, P. H.;Wei, Y. Y.;Chen, C. W.;Reng, H. C.;Ling, D. C.;Chen, N. C.;Chang, C. A.
    貢獻者: 淡江大學物理學系
    關鍵詞: 61.05.cp;68.55.−a;73.61.Ey;74.78.Db;81.05.Ea;81.15.Kk
    日期: 2008-05-13
    上傳時間: 2013-01-15 18:20:51 (UTC+8)
    出版者: Wiley
    摘要: Superconductivity and transport characteristics of high-quality wurtzite-structured In- and N-polarity InN thin film on sapphire substrate by metal-organic vapor phase epitaxy (MOVPE) were presented in this study. Single-crystalline InN films with various n-typed carrier concentrations (n = 1 ∼ 6 × 1019cm–3) resulting from nitrogen vacancy (VN) were obtained by changing buffer layers. Superconductivity phase transition at Tc,onset around 3.5 K are observed in both In- and N-polarity InN. This strongly suggest that the superconduc- tivity originate in the In-VN(and/or VN+)-In chain in the a-b plane of InN thin film. Our experimental results show that the nitrogen vacancy in a-b plane of InN thin film must play important roles for the quasi-2D superconducting network in InN system. Temperature - dependent resistance broadening of InN at T < Tc,onset(K) under zero magnetic fields was observed and can be expressed by Kosterlitz-Thouless transition. Details were discussed in this paper. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
    關聯: Physica status solidi (c)5(6), pp.1594-1599
    DOI: 10.1002/pssc.200778515
    顯示於類別:[物理學系暨研究所] 期刊論文


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