Investigation of magnetic and transport properties of GdSbSe

TL;DR

This study explores the magnetic, transport, and magnetocaloric properties of GdSbSe, revealing antiferromagnetic order, strong electronic correlations, and potential Dirac-like electronic behavior in a semimetallic system.

Contribution

It provides a comprehensive analysis of GdSbSe's magnetic and electronic properties, highlighting hidden metamagnetic transitions and field-induced magnetocaloric effects in this novel material.

Findings

Long-range antiferromagnetic order at T_N ≈ 8.6 K

Evidence of strong electronic correlations with high Sommerfeld coefficient

Indications of Dirac-like dispersion and non-trivial electronic features

Abstract

We report the detailed investigation of the magnetic, transport, and magnetocaloric effects of GdSbSe by magnetic susceptibility $\chi(T)$, isothermal magnetization $M(H)$, resistivity $\rho(T, H)$, and heat capacity $C_p(T)$ measurements, crystallizing in the ZrSiS-type tetragonal crystal system with space group $P4/nmm$. Temperature-dependent magnetic susceptibility measurements revealed long-range antiferromagnetic ordering with two additional magnetic anomalies below N\'eel temperature ($T_N$ $\approx$ 8.6 K), corroborated through magnetocaloric and specific heat studies. Isothermal magnetization measurements unveil hidden metamagnetic signatures through a clear deviation from linearity. In addition, the enhanced value of the Sommerfeld coefficient ($\gamma$ = 152(5) mJ/ mol K$^2$) suggests strong electronic correlations in GdSbSe. The entropy of magnetization derived from magnetic isotherms unfolds the field-induced transition from Inverse magnetocaloric Effect (IMCE) to Conventional MCE. The detailed transport properties indicate a semimetallic behavior, strongly coupled with magnetic order. Deviations from Kohler's rule and non-linear Hall resistivity anticipate the possibility of Dirac-like dispersion with non-trivial characteristics.