反向
凝聚态物理
材料科学
铁磁性
钙钛矿(结构)
量子反常霍尔效应
绝缘体(电)
格子(音乐)
莫特绝缘子
量子
复合数
量子霍尔效应
物理
量子力学
电子
结晶学
复合材料
化学
光电子学
数学
声学
几何学
作者
Long-Hua Wu,Qifeng Liang,Xiao Hu
标识
DOI:10.7566/jpsj.85.014706
摘要
Based on first-principles calculations, we propose a sandwich structure composed of a G-type anti-ferromagnetic (AFM) Mott insulator LaCrO$_3$ grown along the [001] direction with one atomic layer replaced by an inverse-perovskite material Sr$_3$PbO. We show that the system is in a topologically nontrivial phase characterized by simultaneous nonzero charge and spin Chern numbers, which can support a spin-polarized and dissipationless edge current in a finite system. Since these two materials are stable in bulk and match each other with only small lattice distortions, the composite material is expected easy to synthesize.
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