论文标题
在碳网络中互锁的节点链及其示例
Interlocking nodal chains and their examples in carbon networks
论文作者
论文摘要
节点链是淋巴结线半表示的典型拓扑阶段。在这里，我们提出了一个新的拓扑阶段 - 互锁的节点链，其中两组结节链相互关联。它包括一（1D），两（2D）和三维（3D）版本，可以由三波段模型产生。 2D和3D互锁的淋巴结链将演变为其他一些阶段，例如双同心分离（或相交）淋巴结环，并存的淋巴结链和分离的（或相交）淋巴结环。这些阶段表现出各种表面状态和兰道水平，这意味着与它们相关的电子和磁性特性丰富。此外，可以在应变下的一系列碳网络中实现2D互锁的节点链和相关的相变。没有应变，碳结构中的拓扑相是双同心孤立的节点环。较大的拉伸应变会导致相位转移到互锁的节点链上，而中间相是淋巴结链和分离的淋巴结环的共存阶段。另外，讨论了碳网络的稳定性和合成。
Nodal chain is a typical topological phase in nodal line semimetals. Here, we propose a new topological phase -- interlocking nodal chains, in which two sets of nodal chains are interlocked each other. It includes one- (1D), two- (2D) and three-dimensional (3D) versions, which can be produced by a three-band model. The 2D and 3D interlocking nodal chains will evolve into some other phases, such as double concentric isolated (or intersecting) nodal rings, coexisting nodal chain and isolated (or intersecting) nodal rings. These phases exhibit diverse surface states and Landau levels, which implies that there are rich electronic and magnetic properties associating with them. Moreover, the 2D interlocking nodal chains and related phase transitions can be realized in a series of carbon networks under strain. Without strain, topological phase in the carbon structures is double concentric isolated nodal rings. A larger tensile strain leads to the phase transiting to an interlocking nodal chain, while the middle phase is a coexisting phase of a nodal chain and isolated nodal rings. In addition, stability and synthesis of the carbon networks are discussed.
