Pressure-induced disappearance of superconductivity across isostructural transition in underdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta }$

POSTER

Abstract

There exist rich phenomena in the underdoped regime of cuprate superconductors. An underdoped Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$ single crystal is chosen to investigate the pressure-driven evolution of the superconducting behavior and structural properties by electrical resistance and synchrotron X-ray diffraction measurements. We find that an isostructural phase transition starts at 16.0 GPa and a structural collapse occurs at around 23.7 GPa. Meanwhile, superconductivity is observed to disappear and superconductor-insulator transition takes place across the phase transition. These results suggest that the Fermi surface topology could undertake some modification at high pressures.

Authors

  • Jian-Bo Zhang

    • Department of Physics, South China University of Technology, Guangzhou 510640, China

  • Xiao-Jia Chen

    • Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015
    • Carnegie Institution of Washington
    • Geophysical Laboratory, Carnegie Institution of Washington, Wanshington, DC 20015, USA
    • Geophysical Laboratory, Carnegie Institution of Washington, Washington, D. C. 20015, USA

  • Ling-Yun Tang

    • Department of Physics, South China University of Technology, Guangzhou 510640, China

  • Zhen-Xing Qin

    • Department of Physics, South China University of Technology, Guangzhou 510640, China

  • Jiang Zhang

    • Department of Physics, South China University of Technology, Guangzhou 510640, China

  • Mikhail Eremets

    • Max Planck Institute für Chemie, Mainz 55020, Germany

  • Jing Liu

    • Institute of High Energy Physics, Chinese Academy of Science, Beijing 100190, China

  • Jin-Sheng Wen

    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA

  • Zhi-Jun Xu

    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA

  • Genda Gu

    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA

  • Ho-Kwang Mao

    • Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA