Investigation of magnetic and transport properties of GdSbSe

We report the detailed investigation of the magnetic, transport, and magnetocaloric effects of GdS-
bSe by magnetic susceptibility χ(T ), isothermal magnetization M (H), resistivity ρ(T, H), and heat
capacity Cp(T ) measurements, crystallizing in the ZrSiS-type tetragonal crystal system with space
group P 4/nmm. Temperature-dependent magnetic susceptibility measurements revealed long-range
antiferromagnetic ordering with two additional magnetic anomalies below N´eel temperature (TN ≈
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 (γ = 152(5) mJ/ mol K2) 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. Furthermore, the linear field dependence of MR in the high-field region anticipate
the possibility of Dirac-like dispersion. Deviations from Kohler's rule and non-linear Hall resistivity
suggest the multiband nature of GdSbSe.