Successive magnetic transitions in heavy fermion superconductor Ce3PtIn11 studied by 115In nuclear quadrupole resonance

TL;DR

This study uses 115In NQR to investigate magnetic transitions in the heavy fermion superconductor Ce3PtIn11, revealing two successive magnetic phases and complex magnetic ordering behaviors.

Contribution

It provides new insights into the magnetic phase transitions and ordering states in Ce3PtIn11 using nuclear quadrupole resonance techniques.

Findings

Two successive magnetic transitions at 2.2 K and 2.0 K.

Different magnetic ordering states between TN1 and TN2.

Magnetic moments at Ce(1) and Ce(2) sites contribute to the magnetic structure.

Abstract

Nuclear quadrupole resonance (NQR) measurements were performed on the heavy fermion superconductor Ce3PtIn11 with Tc = 0.32 K. The temperature dependence of both spin-lattice relaxation rate 1/T1 and NQR spectra evidences the occurrence of two successive magnetic transitions with TN1 = 2.2 K and TN2 = 2.0 K. In successive magnetic transitions, even though the magnetic moment at the Ce(2) site plays a major role, the magnetic moment at the Ce(1) site also contributes to some extent. While a commensurate antiferromagnetic ordered state appears for TN2 < T < TN1, a partially incommensurate antiferromagnetic ordered state is suggested for T < TN2.