In this work, based on first-principles, we reported that synthesized organic-inorganic hybrid coordination polymer C₃H₉CdCl₃N is an excellent topological material co-exhibiting superior Dirac point (DP) and nodal surface (NS) states. Importantly, C₃H₉CdCl₃N enjoys the following advantages: (1) this material is easily synthesized and the high-quality compound has been obtained before; (2) this material features a DP state at K point near the Fermi level (E_F), and the calculated Fermi velocity of this DP is 1.323 × 10⁵ m/s; (3) this material exhibits NS in the k_z = π plane, and the energy variation of the NS is very small; (4) Both of the DP and NS features are close to the E_F; (5) In addition to the DP and NS states, there are no other energy bands near the E_F. It is hoped that organic-inorganic hybrid coordination polymers C₃H₉CdCl₃N can be seen as a good platform to further study the rich topological states in the near future.

在这项工作中，基于第一性原理，我们报道了合成的有机-无机杂化配位聚合物C ₃ H ₉ CdCl ₃ N是同时具有优越的狄拉克点（DP）和节点表面（NS）状态的优良拓扑材料。重要的是，C ₃ H ₉ CdCl ₃ N具有以下优点：（1）该材料易于合成并且以前已经获得了高质量的化合物；（2）该材料在费米能级（E _F）附近的K点处具有DP状态，计算出的该DP的费米速度为1.323×10 ⁵  m / s；（3）该材料在k _z处显示NS =π平面，NS的能量变化很小；（4）DP和NS特征都接近E _F；（5）除了DP和NS状态外，E _F附近没有其他能带。希望将有机-无机杂化配位聚合物C ₃ H ₉ CdCl ₃ N视为在不久的将来进一步研究丰富的拓扑状态的良好平台。