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Superconductivity and scanning tunneling microscopy (STM) / spectroscopy (STS) of transition metal oxide artificial lattices

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Abstract

High Tc superconducting artificial lattices and superlattices have been constructed by a laser molecular beam epitaxy. Layer-by-layer growth method controlled by RHEED and STM is a promising method for the construction of these artificial lattices. Formation and properties of superconducting artificial lattices and super-conducting / ferromagnetic superlattices are presented as the typical examples. In order to investigate the electronic state of carrier doped strongly correlated electronic system, STS measurements have been performed on La2−xSrxCuO4, La2−xSrxNiO4, and La1-xSrxMnO3 thin films. Based on the similarities and the differences between the STS spectra of the three types of the films, electronic states of the strongly correlated system are discussed.

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Authors and Affiliations

  1. The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibarakt, 567, Osaka, Japan

    Tomoji Kawai & Masaki Kanai

Authors
  1. Tomoji Kawai
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  2. Masaki Kanai
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Kawai, T., Kanai, M. Superconductivity and scanning tunneling microscopy (STM) / spectroscopy (STS) of transition metal oxide artificial lattices. J Low Temp Phys 105, 1349–1358 (1996). https://doi.org/10.1007/BF00753888

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  • DOI: https://doi.org/10.1007/BF00753888

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