CoRuTiGe: A Possible Spin Gapless Semiconductor
arXiv:2508.12376 · doi:10.1103/l85m-lqqq
Abstract
We report experimental and theoretical investigations on the quaternary Heusler alloy CoRuTiGe, synthesized using the arc melting technique. Crystal structure analysis reveals a tetragonal structure at room temperature. Magnetization measurements as a function of temperature and magnetic field indicate ferromagnetic nature with a saturation magnetization of 0.681 mB/f.u. at 5 K. The temperature dependence of electrical resistivity shows a nearly linear decrease in the high-temperature range, indicating the spin gapless semiconductor like behavior of the material. This SGS nature is further supported by the temperature-independent carrier concentration and mobility. Hall effect analysis reveals that the anomalous Hall effect in CoRuTiGe arises from both intrinsic and extrinsic mechanisms. Additionally, a well-defined symmetric negative magnetoresistance is observed at low temperatures. These findings suggest that CoRuTiGe holds significant promise for spintronic applications.
22 pages, 12 figures
References in corpus (22)
- Anomalous Hall effect
- WannierTools: An open-source software package for novel topological materials
- Maximally-localized Wannier functions for entangled energy bands
- Slater-Pauling Behavior of the Half-Ferromagnetic Full-Heusler Alloys
- Proper Scaling of the Anomalous Hall Effect
- Realization of spin gapless semiconductors: the Heusler compound Mn2CoAl
- Spin gapless semiconducting behavior in equiatomic quaternary CoFeMnSi Heusler alloy
- From colossal to zero: Controlling the Anomalous Hall Effect in Magnetic Heusler Compounds via Berry Curvature Design
- High throughput screening for spin-gapless semiconductors in quaternary Heusler compounds
- Magnetism in tetragonal manganese-rich Heusler compounds
- Electronic structure, magnetism and antisite disorder in CoFeCrGe and CoMnCrAl quaternary Heusler alloys
- Spin gapless semiconductors
- Experimental and Theoretical Investigation on the Possible Half-metallic Behaviour of Equiatomic Quaternary Heusler Alloys: CoRuMnGe and CoRuVZ (Z = Al, Ga)
- Spin Gapless Semiconducting Nature in Co-rich Co1+xFe1-xCrGa: Insight and Advancements
- Observation of large positive magnetoresistance and its sign reversal in GdRhGe
- Anti-site disorder and Berry curvature driven anomalous Hall effect in spin gapless semiconducting Mn2CoAl Heusler compound
- Magnetic tunnel junctions with a B2-ordered CoFeCrAl equiatomic Heusler alloy
- Rare observation of spin-gapless semiconducting characteristics and related band topology of quaternary Heusler alloy CoFeMnSn
- Magnetic and transport properties of Sb2Te3 doped with high concentration of Cr
- Experimental realization of a high Curie temperature CoFeRuSn quaternary Heusler alloy for spintronic applications
- Designing compensated magnetic states in tetragonal Mn3Ge-based alloys
- Low-Moment Semiconducting Properties of Quaternary Heusler Alloy CoRuTiSn