Decoupling of itinerant and localized d-orbital electrons in the compound Sc0.5Zr0.5Co
- 23 September 2020
- journal article
- research article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 32 (40), 40LT01
- https://doi.org/10.1088/1361-648X/ab9bce
Abstract
By using the arc-melting method, we successfully synthesize the compound Sc0.5Zr0.5Co with the space group ofPm-3m. Both the resistivity and magnetic susceptibility measurements reveal a phase transition at about 86 K. This transition might be attributed to the establishment of an antiferromagnetic order. The magnetization hysteresis loop measurements in wide temperature region show a weak ferromagnetic feature, which suggests a possible canted arrangement of the magnetic moments. Bounded by the phase transition temperature, the resistivity at ambient pressure shows a change from Fermi liquid behavior to a super-linear behavior as temperature increases. By applying pressure up to 32.1 GPa, the transition temperature does not show a clear change and no superconductivity is observed above 2 K. The density functional theory calculations simulate the antiferromagnetic order and reveal a gap between the spin-up and spin-down d-orbital electrons. This kind of behavior may suggest that the antiferromagnetic order in this compound originates from the localized d-electrons which do not contribute to the electric conduction. Thus the itinerant and localized d-orbital electrons in the compound are decoupled.Funding Information
- National Natural Science Foundation of China (2016YFA0300401 2016YFA0401704, A0402/11534005 A0402/11674164)
- National Natural Science Foundation of China (2016YFA0300401 2016YFA0401704, A0402/11534005 A0402/11674164)
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