Resistance Anomaly and Linear Magnetoresistance in Thin Flakes of Itinerant Ferromagnet Fe3GeTe2

Research interests in recent years have expanded into quantum materials that display novel magnetism incorporating strong correlations, topological effects, and dimensional crossovers. Fe₃GeTe₂ represents such a twodimensional van der Waals platform exhibiting itinerant ferromagnetism with many intriguing properties. Up to date, most electronic transport studies on Fe₃GeTe₂ have been limited to its anomalous Hall responses while the longitudinal counte...     

对杨氏双缝干涉实验中近似方法的讨论

任何光学教材在讨论杨氏双缝干涉实验时,理所当然地在计算光程差的计算中运用了近似的方法.由于光波的波长相当短,这种近似方法是否准确,即舍去(或添加)的部分与光波波长相比是否足够小,没有在理论上得到证明.显然,这种方法是准确的,因为计算结果符合实验结果.在此只是提供理论上的证明,其结果不仅不会影响杨氏双缝干涉规律的正确性,而且更好地说明了理论与实际相符合.