Synthesis and properties of superconducting lanthanum sulfide films

A. D. Kent, B. Oh, T. H. Geballe, A. F. Marshall

    Research output: Contribution to journalArticle

    Abstract

    We report the structural and transport properties of La-S films prepared by reactive planar magnetron sputtering. The La-S (Th3P4 cubic structure) can be prepared over a range of compositions with the electronic properties varying from a low electron density superconductor (Tc≈ 7 K) to a semiconductor which shows thermally activated transport at low temperature. This method of deposition produces small grained (≈ 200 Å) polycrystalline films whose composition can be varied continuously by tuning the deposition parameters. We discuss the TEM and X-ray data as well as the resistivity, Hall effect and superconducting properties of these films. We find that the superconducting transition temperature of the films is the same as that of bulk single crystals; however the mobility is a factor of 2 to 300 lower than that found in bulk specimens.

    Original languageEnglish (US)
    Pages (from-to)57-62
    Number of pages6
    JournalMaterials Letters
    Volume5
    Issue number3
    DOIs
    StatePublished - 1987

    Fingerprint

    Lanthanum
    Sulfides
    lanthanum
    sulfides
    synthesis
    Hall effect
    Chemical analysis
    Electronic properties
    Magnetron sputtering
    Transport properties
    Superconducting materials
    Superconducting transition temperature
    Carrier concentration
    Structural properties
    magnetron sputtering
    Tuning
    transport properties
    transition temperature
    tuning
    Single crystals

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Synthesis and properties of superconducting lanthanum sulfide films. / Kent, A. D.; Oh, B.; Geballe, T. H.; Marshall, A. F.

    In: Materials Letters, Vol. 5, No. 3, 1987, p. 57-62.

    Research output: Contribution to journalArticle

    Kent, A. D. ; Oh, B. ; Geballe, T. H. ; Marshall, A. F. / Synthesis and properties of superconducting lanthanum sulfide films. In: Materials Letters. 1987 ; Vol. 5, No. 3. pp. 57-62.
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