NDLI: Giant magnetoresistance and spin Seebeck coefficient in zigzag α-graphyne nanoribbons

Content Provider	Royal Society of Chemistry (RSC)
Author	Wang, Xue-Feng Zhou, Liping Liu, Yu-Shen Dong, Yao-Jun Jiang, Yong-Jing Zhai, Ming-Xing Vasilopoulos, P. You, Wen-Long
Copyright Year	2014
Abstract	We investigate the spin-dependent electric and thermoelectric properties of ferromagnetic zigzag α-graphyne nanoribbons (ZαGNRs) using density-functional theory combined with non-equilibrium Green's function method. A giant magnetoresistance is obtained in the pristine even-width ZαGNRs and can be as high as 106%. However, for the doped systems, a large magnetoresistance behavior may appear in the odd-width ZαGNRs rather than the even-width ones. This suggests that the magnetoresistance can be manipulated in a wide range by the dopants on the edges of ZαGNRs. Another interesting phenomenon is that in the B- and N-doped even-width ZαGNRs the spin Seebeck coefficient is always larger than the charge Seebeck coefficient, and a pure-spin-current thermospin device can be achieved at specific temperatures.
Starting Page	11121
Ending Page	11129
Page Count	9
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	6
Issue Number	19
Journal	Nanoscale
DOI	10.1039/c4nr02426e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Thermoelectric effect Seebeck coefficient Seebeck Density functional theory Ferromagnetism Magnetoresistance
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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Giant magnetoresistance and spin Seebeck coefficient in zigzag α-graphyne nanoribbons