掺铋的 lutetium 铁石榴石薄膜具有巨量可见光范围的磁光灵敏度
Bismuth-substituted Lutetium Iron Garnet Films with Giant Visible-Range Magneto-Optical Sensitivity
AI总结：
本研究通过掺铋技术制备了具有高Verdet常数的可见光范围磁光灵敏度的LuBiIG薄膜，适用于低温检测和量子应用。
摘要：
磁光材料在现代物理中不可或缺，是精密磁感应、非互易光子学和光学隔离技术的基础。持续追求高Verdet常数的材料推动了具有极端磁光灵敏度的石榴石基化合物的发展。在本工作中，我们报告了掺铋的lutetium铁石榴石（LuBiIG）的生长和全面磁光表征。该材料结合了铋的较大自旋轨道耦合与lutetium铁石榴石的晶格稳定性。薄膜表现出极高的Verdet常数，最高可达-0.120度/微米/毫特斯拉，在可见光谱范围约520nm处达到峰值。厚度在80至220纳米之间的LuBiIG薄膜通过脉冲激光沉积法生长，并在500-820纳米波长范围内在室温下进行表征。这些结果使LuBiIG成为高灵敏度磁光材料，适用于先进低温检测和混合量子应用。
英文摘要：
Magneto-optical materials are indispensable across modern physics, serving as the foundation for precision magnetic sensing, nonreciprocal photonics, and optical isolation technologies. The continual pursuit of materials with high Verdet constants has driven the development of garnet-based compounds exhibiting giant magneto-optical sensitivity. In this work, we report the growth and comprehensive magneto-optical characterization of bismuth-substituted lutetium iron garnet (LuBiIG), a material that combines the large spin-orbit coupling of bismuth with the lattice stability of lutetium iron garnet. LuBiIG films with thicknesses between 85-220nm were grown by pulsed laser deposition and characterized at room temperature over the 500-820nm wavelength range. The films exhibit an exceptionally high Verdet constant of up to -1.37e8 degree/meter/Tesla, peaking in the visible spectral range near 520nm. These results position LuBiIG as a highly sensitive magneto-optical material suitable for advanced cryogenic detection and hybrid quantum applications.
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