Abstract
The electronic structure of transition metal (TM) adsorbed two-dimensional g-C2N is investigated by first-principles calculations. Most of TM-adsorbed g-C2N show metallic properties, but Ni and Zn adsorptions show a band gap of 0.6 and 1.6 eV. The maximum spin splitting of TM-adsorbed g-C2N from Sc to Zn is 110, 186, 117, 100, 0, 515, 147, 64, 95 and 0 meV, respectively. The magnetic moments of adsorbed structure from Sc to Co are in the range from 0.15 to 2.11 μB, while in Ni, Cu and Zn adsorbed cases no magnetic moments appear. In Fe-adsorbed g-C2N, the adsorption structure at site of Fe12 generates a 90 meV band gap, where the adsorption sites at CC and CN rings are marked as Fe1 and Fe2. The maximum spin splitting is 515, 412 and 750 meV as Fe atomic concentration is 5.56%, 11.11% and 16.67%. Our results can bring more significant basis on the design of spintronic and valleytronic devices.
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