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Title: Perfect spin-filter and spin-valve in carbon atomic chains
Authors: Zeng, M.G. 
Shen, L. 
Cai, Y.Q. 
Sha, Z.D.
Feng, Y.P. 
Issue Date: 2010
Citation: Zeng, M.G., Shen, L., Cai, Y.Q., Sha, Z.D., Feng, Y.P. (2010). Perfect spin-filter and spin-valve in carbon atomic chains. Applied Physics Letters 96 (4) : -. ScholarBank@NUS Repository.
Abstract: We report ab initio calculations of spin-dependent transport in single atomic carbon chains bridging two zigzag graphene nanoribbon electrodes. Our calculations show that carbon atomic chains coupled to graphene electrodes are perfect spin-filters with almost 100% spin polarization. Moreover, the carbon atomic chains show bias-dependent magnetoresistance as large as 106 % which make them perfect spin-valves. These two spin-related properties are independent of the length of carbon chains. The simultaneous occurrence of spin-filter and spin-valve in a single device opens the possibilities of all-carbon composite spintronics. © 2010 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3299264
Appears in Collections:Staff Publications

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