Magnetic Weel semimetal single crystal with novel quantum oscillation as well as preparation method and application of magnetic Weel semimetal single crystal

High-quality PrAlSi single crystals were prepared by adjusting the Al/Si occupancy ratio, solving the problem of preparing stable and high-quality magnetic Weyl half-metal materials. This enabled the study of the coupling between magnetism and topological states and quantum oscillation phenomena, and has promising applications in spintronic devices and sensors.

CN122039221APending Publication Date: 2026-05-15YUNNAN NORMAL UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202610123635.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-29
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing technologies make it difficult to prepare stable and high-quality magnetic Weyl half-metal materials, and there are limited means to study their novel properties and control methods for magnetic coupling with topological states.

Method used

Using elemental Al as a flux, and by controlling the pressure of Ar in the quartz tube to regulate the Al/Si occupancy ratio in the single crystal, PrAlSi single crystals that simultaneously break T-symmetry and P-symmetry were prepared. High-purity magnetic Weyl half-metal single crystals were obtained using a high-temperature muffle furnace and centrifugation technology.

Benefits of technology

Stable Weyl state observations were achieved, facilitating the study of the interaction between magnetic states and Weyl electrons. Temperature-dependent resistivity oscillations were demonstrated, showing potential applications in spintronic devices and sensors.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a magnetic Weel semimetal single crystal with novel quantum oscillation as well as a preparation method and application of the magnetic Weel semimetal single crystal. The single crystal is prepared by adopting a self-dissolution method, the chemical formula of the single crystal is PrAlSi, the single crystal structure belongs to a LaPtSi-type tetragonal crystal system, the space group is non-centrosymmetric I41md (No.109), a magnetic test shows the ferromagnetic ground state characteristic of the PrAlSi single crystal, and the ferromagnetic ground state characteristic and the ferromagnetic ground state characteristic indicate that the PrAlSi single crystal is a novel magnetic Weil semi-metal material of which the space inversion symmetry and the time inversion symmetry are broken at the same time. Therefore, the single crystal system has a stable foreign state. The PrAlSi single crystal shows obvious resistivity-temperature quantum oscillation, which is a novel quantum oscillation behavior and is derived from destructive interference between SdH oscillation of a spin splitting Fermi surface caused by strong exchange interaction of Weyl Fermi-4f electrons. The magnetic Weel semimetal single crystal with the stable Weel state and the novel quantum oscillation has a good application prospect in the aspects of spintronics devices and sensors.
Need to check novelty before this filing date? Find Prior Art