Scanning tunneling microscopy/spectroscopy of heavily overdoped Bi 2Sr2CuOy single crystals

Hideki Mashima, Noritaka Fukuo, Go Kinoda, Taro Hitosugi, Toshihiro Shimada, Takeshi Kondo, Yoshinori Okada, Hiroshi Ikuta, Yuji Matsumoto, Tetsuya Hasegawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    We have carried out scanning tunneling microscopy/spectroscopy (STM/STS) of heavily overdoped Bi2Sr2CuOy single crystals with Tc<2 K. STS spectra showed a pseudogap structure with dull coherence peaks. Furthermore, we found that the magnitude of pseudogap is spatially non-uniform in a nm scale and varies from 10 to 30 meV. This supports a scenario that the electronic inhomogeneity is a consequence of randomly distributed Coulomb potential in the CuO2 layers induced by disorder of excess oxygen in the BiO layers.

    Original languageEnglish
    Title of host publicationLOW TEMPERATURE PHYSICS
    Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
    Pages509-510
    Number of pages2
    DOIs
    Publication statusPublished - 2006 Dec 1
    EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
    Duration: 2006 Aug 102006 Oct 17

    Publication series

    NameAIP Conference Proceedings
    Volume850
    ISSN (Print)0094-243X
    ISSN (Electronic)1551-7616

    Other

    OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
    CountryUnited States
    CityOrlando, FL
    Period06/8/1006/10/17

    Keywords

    • Bi2201
    • Electronic inhomogeneity
    • Pseudogap
    • STM/STS

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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  • Cite this

    Mashima, H., Fukuo, N., Kinoda, G., Hitosugi, T., Shimada, T., Kondo, T., Okada, Y., Ikuta, H., Matsumoto, Y., & Hasegawa, T. (2006). Scanning tunneling microscopy/spectroscopy of heavily overdoped Bi 2Sr2CuOy single crystals. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 509-510). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2354808