期刊论文

Deng, X. Q.;Zhang, Z. H.

英文

Organic Electronics

1566-1199

2017

41

376-383

10.1016/j.orgel.2016.11.033

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61371065, 11674039]; Hunan Provincial Natural Science Foundation of ChinaNatural Science Foundation of Hunan Province [2015JJ3002, 2015JJ2009, 2015JJ2013]; Scientific Research Fund of Hunan Provincial Education DepartmentHunan Provincial Education Department [14A013, 15A004, 13ZA0089]; Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province; Scientific Research Innovation Fund for Postgraduate of Changsha University of Science and Technology

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Based on the first-principles method, the magnetic properties for zigzag-edge graphene nanoribbon (ZGNR) junctions are investigated. The results show the system had the ferromagnetic or antiferro-magnetic ground state depending on the connection sites between ZGNR electrodes and the central ZGNR. The junction displays a metallic behavior when the central ZGNR is connected at the middle site of electrodes with a ferromagnetic state, but shows obvious spin semiconductor feature when the connection site is shifted to the edge of the ZGNR. For the antiferromagnetic states, all models show a semico...