Superconducting water derivatives of Sr2Can-1CunO2+2n-delta (n=2-4) high-Tc superconductors

Tomoya Aoba*, Tsuneo Suzuki, Tadachika Nakayama, Hisayuki Suematsu, Koichi Niihara, Maarit Karppinen

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    We prepared two new phases of high-T-c superconductors with water molecules as the main constituents of the charge-reservoir block and refined the synthesis method for another phase. These water containing phases form from high-pressure-synthesized Sr2Can-1CunO2+2n +/-delta or 0((sr))2(n-1)n (n = 2-4) superconducting phases through a topotactic water-intercalation process when the parent phases are exposed to open air at 80 degrees C. Upon the water intercalation the body-centered unit cell of the parent phase is elongated along the c-axis direction by similar to 6.2 angstrom. Despite the elongated unit cell the T-c value is not changed upon the water intercalation. The water-based H-m((sr))2(n-1)n copper-oxide superconductors are new exotic members of the yet tiny family of superconductors with T-c values higher than 100 K. (C) 2016 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)67-72
    Number of pages6
    JournalMaterials Chemistry and Physics
    Volume177
    DOIs
    Publication statusPublished - 1 Jul 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Superconductors
    • Electron microscopy
    • High pressure
    • Superconductivity
    • HIGH-PRESSURE SYNTHESIS
    • 02(N-1) N SUPERCONDUCTORS
    • MOLECULAR-BEAM EPITAXY
    • O SYSTEM
    • HOMOLOGOUS SERIES
    • CHARGE-RESERVOIR
    • PHASE
    • IDENTIFICATION
    • OXIDES

    Cite this