Commensurate Antiferromagnetism in CePt2In7, a Nearly Two-Dimensional Heavy Fermion System

TL;DR

This paper reports the synthesis and characterization of CePt2In7, a nearly two-dimensional heavy fermion system exhibiting commensurate antiferromagnetism at 5.2 K, with strong magnetic fluctuations in the paramagnetic phase.

Contribution

It introduces CePt2In7 as a new heavy fermion material with enhanced two-dimensionality and detailed magnetic properties analysis.

Findings

Antiferromagnetic transition at 5.2 K

Commensurate antiferromagnetic order confirmed by NQR

Strong antiferromagnetic fluctuations in the paramagnetic state

Abstract

CePt$_2$In$_7$ is a new heavy fermion system with a structure similar to the CeMIn$_5$ system but with greater two-dimensional character. We report the synthesis and characterization of phase pure polycrystalline material, which reveals an antiferromagnetic transition at $T_N = 5.2$ K. Nuclear Quadrupolar Resonance (NQR) studies indicate that the antiferromagnetism is commensurate and exhibits strong antiferromagnetic fluctuations in the paramagnetic state.