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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27606

    Title: Spectra of the high Tc cuprates understood by the variational studies of the t–J-type models
    Authors: 何昌明;Ho, Chang-ming;Lee, T. K.;Shih, C. T.
    Contributors: 淡江大學物理學系
    Date: 2006-01-01
    Issue Date: 2009-12-31 10:29:32 (UTC+8)
    Publisher: Elsevier
    Abstract: Trial wavefunctions with and without antiferromagnetic order for the 2-dimensional t–J-type model are proposed to describe the low-energy states of high Tc cuprates with doped holes or electrons. In the slightly doping regime, we found states behaving like charged quasi-particles with well-defined momenta and having much less pairing correlations than previously studied ones. There exist also states showing the incoherent and ‘spin-bag’ behaviors. Our results are supported by exact calculation and are consistent with recent photoemission experiments. With increasing doping, superconducting states emerge and behave similarly with that described in recent band-structure analysis and seen in various materials.
    Relation: Journal of Physics and Chemistry of Solids 67(1-3), pp.150-153
    DOI: 10.1016/j.jpcs.2005.10.049
    Appears in Collections:[物理學系暨研究所] 期刊論文

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