Pressure-induced superconductivity and effective mass enhancement near antiferromagnetic quantum critical point in CePt$_{2}$In$_{7}$

ORAL

Abstract

The discovery of the CeMIn$_{5}$ (M=Co, Rh, Ir) family of heavy fermion superconductors has been a watershed for the field of heavy fermion physics. These materials have not only provided an effective means to explore the rich interplay of magnetism and superconductivity (e.g., CeRhIn$_{5})$, the development of the heavy fermion state (e.g., Ce$_{1-x}$La$_{x}$CoIn$_{5})$, and quantum criticality (e.g., CeRhIn$_{5})$, but have also provided compelling evidence that structural tuning plays an essential role in enhancing their superconducting properties. I will present our discovery of superconductivity in a new, more two-dimensional member of this Ce$_{m}$M$_{n}$In$_{2m+3n}$ family, CePt$_{2}$In$_{7}$, which displays the coexistence of antiferromagnetism and superconductivity and an enhancement of the effective mass under pressure near an antiferromagnetic quantum critical point that is remarkably similar to CeRhIn$_{5}$.

Authors

  • Eric D. Bauer

    • Los Alamos National Laboratory, New Mexico, USA
    • Los Alamos National Laboratory
    • LANL
    • Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Los Alamos National Lab
  • H. O. Lee

    • LANL
  • V. A. Sidorov

    • LANL
  • N. Kurita

    • LANL
  • K. Gofryk

    • LANL
  • F. Ronning

    • LANL
  • Tuson Park

    • Department of Physics, Sungkyunkwan University
  • R. Movshovich

    • LANL
  • J. D. Thompson

    • LANL