⇦Chinese Physics Letters, 2023, Vol. 40, No. 5, Article code 059901 Erratum: Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors [Chin. Phys. Lett. 39, 097401 (2022)] Yuhao Gu (顾雨豪)1, Kun Jiang (蒋坤)1,2, Xianxin Wu (吴贤新)3, and Jiangping Hu (胡江平)1,4* Affiliations 1Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China 3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China 4Kavli Institute of Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China Received 30 March 2023; accepted manuscript online 31 March 2023; published online 13 April 2023 *Corresponding author. Email: jphu@iphy.ac.cn Citation Text: Gu Y H, Jiang K, Wu X X et al. 2023 Chin. Phys. Lett. 40 059901    Abstract
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 DOI:10.1088/0256-307X/40/5/059901 © 2023 Chinese Physics Society Article Text
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Fig. 1. (a) Structure of Co$_2$N$_2$ dimer. (b) Structure of Co$_2$N$_2$ layer. The dashed black lines show the mirror symmetries. $X, Y$ coordinates are defined according to the direction of the Co–Co bond, and $x, y$ are the global coordinates in the conventional crystal structure.
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Fig. 2. Sketch of intra-orbital NN hopping between anti-bonding molecular orbitals of Co$_2$N$_2$ dimers. The intra-anti-bonding-orbital hoppings between the $d_{X^2-Y^2}^{\rm A}/d_{XZ}^{\rm A}$ molecular orbitals of two NN dimers are forbidden due to the opposite mirror symmetry eigenvalues while those between the $d_{XY}^{\rm A}/d_{YZ}^{\rm A}$ molecular orbitals are allowed.
Specifically, the subscripts $XZ$ and $YZ$ in mirror symmetries $m_{_{\scriptstyle XZ}}$ and $m_{_{\scriptstyle YZ}}$ in Figs. 1 and 2 should be in upper case, instead of $xz$ and $yz$, as they are defined in the local $X$–$Y$ coordinate system. References Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors
[1] Gu Y H, Jiang K, Wu X X, and Hu J P 2022 Chin. Phys. Lett. 39 097401