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$_{5}$.
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