General principles to high-throughput constructing two-dimensional carbon allotropes<xref rid="cpb_29_3_037306fn1" ref-type="fn">*</xref><fn id="cpb_29_3_037306fn1"><label>*</label><p>Project supported by the National Science Fund for Distinguished Young Scholars, China (Grant No. 51725103) and the National Natural Science Foundation of China (Grant No. 51671193). All calculations have been performed on the high-performance computational cluster in the Shenyang National University Science and Technology Park.</p></fn>

General principles to high-throughput constructing two-dimensional carbon allotropes**

Project supported by the National Science Fund for Distinguished Young Scholars, China (Grant No. 51725103) and the National Natural Science Foundation of China (Grant No. 51671193). All calculations have been performed on the high-performance computational cluster in the Shenyang National University Science and Technology Park.

Xie Qing^{1, 2}, Wang Lei^{1, 3}, Li Jiangxu^{1, 3}, Li Ronghan^{1, 3}, Chen Xing-Qiu^{1, †}

Band structures and density of states of graphene allotropes. We have found (p) one semiconductor and (i), (j), (q), (t) four new semimetals. The rest structures are metallic.