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Herein, a sandwich electride 2[CaCl]<jats:sup>+<\/jats:sup>:2e<jats:sup>\u2212<\/jats:sup> is designed, featuring a tetragonal lattice structure, including two atomic lattice layers and one interstitial electron layer. The interstitial electrons form nonsymmorphic\u2010symmetry\u2010protected Dirac points (DPs) at the X and M points, which are robust against the spin\u2013orbit coupling effect. DPs exhibit an approximately elliptical shape, characterized by a relatively high anisotropy, resulting from the interplay between the electron and atomic layers. In addition, 2[CaCl]<jats:sup>+<\/jats:sup>:2e<jats:sup>\u2212<\/jats:sup> possesses a lower work function (WF) (3.43\u2009eV), endowing it with robust electron\u2010supplying characteristics. Due to the low WF and interstitial electrons, 2[CaCl]<jats:sup>+<\/jats:sup>:2e<jats:sup>\u2212<\/jats:sup> loaded Ru shows outstanding catalytic performance for N<jats:sub>2<\/jats:sub> cleavage. A potential research platform for exploring the formation of topological states and promoting nitrogen cracking in electrides is provided.<\/jats:p>","DOI":"10.1002\/smsc.202400131","type":"journal-article","created":{"date-parts":[[2024,7,5]],"date-time":"2024-07-05T08:59:38Z","timestamp":1720169978000},"source":"Crossref","is-referenced-by-count":2,"title":["Zero\u2010Dimensional Interstitial Electron\u2010Induced Spin\u2013Orbit Coupling Dirac States in Sandwich Electride"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4913-0928","authenticated-orcid":false,"given":"Weizhen","family":"Meng","sequence":"first","affiliation":[{"name":"College of Physics Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University  Shijiazhuang 050024 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiayu","family":"Jiang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Reliability and Intelligence of Electrical Equipment, and School of Materials Science and Engineering Hebei University of Technology  Tianjin 300130 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yalong","family":"Jiao","sequence":"additional","affiliation":[{"name":"College of Physics Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University  Shijiazhuang 050024 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fengxian","family":"Ma","sequence":"additional","affiliation":[{"name":"College of Physics Hebei Key Laboratory of Photophysics Research and Application Hebei Normal University  Shijiazhuang 050024 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying","family":"Yang","sequence":"additional","affiliation":[{"name":"College of Physics and Electronic Engineering Chongqing Normal University  Chongqing 401331 China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4847-2907","authenticated-orcid":false,"given":"Zhenxiang","family":"Cheng","sequence":"additional","affiliation":[{"name":"Institute for Superconducting and Electronic Materials (ISEM) Faculty of Engineering and Information Sciences University of Wollongong  Wollongong New South Wales 2500 Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2019-7026","authenticated-orcid":false,"given":"Xiaotian","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute for Superconducting and Electronic Materials (ISEM) Faculty of Engineering and Information Sciences University of Wollongong  Wollongong New South Wales 2500 Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,5]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1102896"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.95.226801"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature04233"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/nsr\/nwu080"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.102.236804"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.108.086804"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.nanolett.6b02335"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.7b00452"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.115.126803"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.mtphys.2022.100774"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.107.115167"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevMaterials.1.054003"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.97.045131"},{"key":"e_1_2_8_15_1","doi-asserted-by":"crossref","first-page":"205102","DOI":"10.1103\/PhysRevB.100.205102","volume":"100","author":"Li S.","year":"2019","journal-title":"Phys. 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