Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 52, Issue 43, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab35a2
Keywords
graphene nanoribbon; spin polarization; chromium triiodide; electron transport
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Funding
- Fundamental Research Funds for the Central Universities [N170506007]
- Liaoning BaiQianWan Talents Program [201892126]
- National Natural Science Foundation of China [11604221]
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Spin-polarized electron transport through the zigzag graphene nanoribbon (ZGNR) is investigated by assuming that it couples with different charomium triiodide (CrI3) geometries, respectively. That is to say that the ZGNR either absorbs the monolayer CrI3 or one CrI3 molecule, or couples laterally with one CrI3 molecule. It is found that the spin polarization in the electron transport process is tightly dependent on the CrI3 geometry and the ZGNR-CrI3 coupling manner. When the CrI3 molecule is absorbed on the surface of the ZGNR, the spin-polarization efficiency is much higher than the other two cases, accompanied by the wide spin-polarization region. This work provides a new kind of scheme for optimizing the spin polarization in graphene-based materials.
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