首页|Giant Magneto-Optical Effect in van der Waals Room-Temperature Ferromagnet Fe3GaTe2
Giant Magneto-Optical Effect in van der Waals Room-Temperature Ferromagnet Fe3GaTe2
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
万方数据
The discovery of ferromagnetic two-dimensional(2D)van der Waals(vdWs)materials provides an opportu-nity to explore intriguing physics and to develop innovative spin electronic devices.However,the main challenge for practical applications of vdWs ferromagnetic crystals lies in the weak intrinsic ferromagnetism and small per-pendicular magnetic anisotropy(PMA)above room temperature.Here,we report the intrinsic vdWs ferromag-netic crystal Fe3GaTe2,synthesized by the self-flux method,exhibiting a Curie temperature(TC)of 370K,a high saturation magnetization of 33.47 emu/g,and a large PMA energy density of approximately 4.17 × 105 J/m3.Fur-thermore,the magneto-optical effect is systematically investigated in Fe3GaTe2.The doubly degenerate E2g(Γ)mode reverses the helicity of incident photons,indicating the existence of pseudoangular-momentum(PAM)and chirality.Meanwhile,the non-degenerate non-chiral A1g(Γ)phonon exhibits a significant magneto-Raman effect under an external out-of-plane magnetic field.These results lay the groundwork for studying phonon chirality and magneto-optical phenomena in 2D magnetic materials,providing the feasibility for further fundamental research and applications in spintronic devices.
张晓敏、王健、朱文凯、张佳茜、李伟浩、张菁、王开友
展开 >
State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China
Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
School of Materials,Shenzhen Campus of Sun Yat-sen University,Shenzhen 518107,China
National Key Research and Development Program of ChinaBeijing Natural Science Foundation Key ProgramNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China
万方数据
