• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanism of the Anomalous Superconductivity in Black Phosphorus

Research Project

Project/Area Number 60460024
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 固体物性
Research InstitutionMuroran Institute of Technology

Principal Investigator

SHIROTANI Ichimin  Muroran Institute of Technology, 工学部, 助教授 (90110692)

Co-Investigator(Kenkyū-buntansha) FUKUSHIMA Seitaro  Muroran Institute of Technology, 工学部, 教授 (40113691)
NAGATA Shoichi  Muroran Institute of Technology, 工学部, 助教授 (80155936)
Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1986: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsSuperconductivity / Phase Transition / High Pressure / Black Phosphorus / ダイヤモンドアンビル型高圧発生装置 / リン / 黒リン / 赤リン
Research Abstract

The pressure-induced superconductivity in black phosphorus was measured along five different paths in a P-T phase diagram. The effect of pressure on the superconductivity transition temperature(Tc) strongly depends on the path in the phase diagram. The Tc of black phosphorus along the path(D) went up to 10.7 K and onset temperature of transition was beyond 13 K at very high pressures. When the red phosphorus as a starting material was pressurized at 4.2 K along the path(D), the Tc steeply increased with increasing pressure; it raised up to 13 K and onset temperature of transition reached 18 K at 30 GPa. This is the highest temperature in elements.
Pressure-induced phase transitions have also studied by X-ray study with synchrotron radiation at liquid nitrogen temperature. The pressure of the transition at 77 K was higher than that at room temperature. Two or three phases coexisted in wide pressure range 6-14 GPa at 77 K. These results suggest that there must be inhomogeneous state in simple cubic phase at liquid helium temperature and the inhomogeneity is closely related to the anomalous superconductivity.

Report

(1 results)
  • 1986 Final Research Report Summary
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Ichimin Shirotani: Phys.Reu.B.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 城谷一民: 機能材料. 7. N 3 56-63 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hiroshi Iwasaki: Physica. 139&140B. 301-304 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masahito Yoshizawa: J.Phys.SOC.Japan. 55. 1196-1202 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Takahashi: Phys.Reu.B. 33. 4324-4326 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Akira Yoshihara: Phys.Reu.B. 34. 7467-7470 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Ichimin Shirotani et al: "Phase Transitions and Superconductivity of Black Phosphorus under High Pressures" Phys. Rev. B ( to be submitted ).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Ichimin Shirotani: "Pressure-Induced Phase Transitions and Anomalous Superconductivity of Phosphorus" Kino Zairyo ( Function & Materials ). 7. 56-63 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Hiroshi Iwasaki et al: "Synchrotron Radiation Diffraction Study of Phase Transitions in Phosphorus at High Pressures and Temperatures" Physica. 139 & 140B. 301-304 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masahito Yoshizawa et al: "Thermal and Elastic Properties of Black Phosphorus" J. Phys. Soc. Japan. 55. 1196-1202 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Takashi Takahashi et al: "Angle-Resolved Photoemission Study of Black Phosphorus: Interlayer Energy Dispersion" Phys. Rev. B. 33. 4324-4326 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

URL: 

Published: 1987-03-31   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi