Deconstruction of the Electronic Properties of a Topological Insulator with a Two-Dimensional Noble Metal–Organic Honeycomb–Kagome Band Structure
Deconstruction of the Electronic Properties of a Topological Insulator with a Two-Dimensional Noble Metal–Organic Honeycomb–Kagome Band Structure
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DOI：
10.1021/acs.jpcc.8b03353
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Haohao Sun;Shijing Tan;M. Feng;Jin Zhao;H. Petek
中科院分区：
文献类型：
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作者：
Haohao Sun;Shijing Tan;M. Feng;Jin Zhao;H. Petek
一些具有强自旋轨道耦合（SOC）的金属有机（MO）晶格被预测表现为二维拓扑绝缘体（2D-TI）。 2D-TI 中（在其他绝缘的 2D MO 片中）具有相反电子自旋的金属边缘态的极化对于自旋电子技术来说很有趣。然而，MO晶格的2D-TI特性尚未得到实验证实。主要挑战是 MO 晶格通常在金属基底上自组织，这可能会引入相互作用，从而改变甚至抑制拓扑特征。我们计算了由贵金属原子顶点和双齿 1,4-亚苯基二异氰化物 (PDI) 连接体组成的二维金属有机蜂窝晶格的拓扑性质，该晶格在自由和金属基底上形成金属有机蜂窝晶格 (MOHKL) 能带结构。顶点和连接器的选择可以独立调整 SOC 和传输属性。计算预测无支撑的二维 MOHKL 确实具有......
Some metal–organic (MO) lattices with a strong spin–orbit coupling (SOC) have been predicted to behave as two-dimensional topological insulators (2D-TIs). The polarization of metallic edge states with the opposite electron spin in 2D-TIs, in otherwise insulating 2D MO sheets, is interesting for spintronic technology. The 2D-TI character of MO lattices, however, has not been confirmed by experiment. The main challenge has been that MO lattices usually self-organize on metal substrates, which can introduce interactions that modify and can even suppress the topological character. We calculate the topological properties of 2D metal–organic honeycomb lattice composed of noble metal atom vertices and bidentate 1,4-phenylene diisocyanide (PDI) linkers, which form metal–organic honeycomb–Kagome lattices (MOHKLs) band structure, free and on metal substrates. The selection of vertices and linkers can independently tune the SOC and transport properties. Calculations predict that unsupported 2D MOHKLs indeed possess ...