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Issue 34, 2017
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Spin transport properties and spin logic gates in manganese phthalocyanine-based molecular combinational circuits

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Abstract

Spintronic devices are very important for futuristic information technology. By using nonequilibrium Green's functions in combination with density functional theory, we investigate the spin transport properties of manganese phthalocyanine (MnPc)-based spintronic devices constructed from MnPc connected in series or parallel with single-walled carbon nanotube electrodes. Our calculations show that MnPc has a large transmission around the Fermi level, which is dominated by the spin-down molecular orbitals even when the magnetization direction of the Mn atom in MnPc molecules is spin up. Series and parallel devices have very different current–voltage relationships, which can be attributed to the magnetic coupling between two Mn atoms. Moreover, we propose a set of spin logic gates, in which spin-polarized current can be manipulated by the magnetic configuration of the Mn atoms. These spin logic gates demonstrate their promising applications in designing spintronic integrated circuits on the atomic scale.

Graphical abstract: Spin transport properties and spin logic gates in manganese phthalocyanine-based molecular combinational circuits

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Publication details

The article was received on 25 May 2017, accepted on 09 Aug 2017 and first published on 09 Aug 2017


Article type: Paper
DOI: 10.1039/C7TC02312J
Citation: J. Mater. Chem. C, 2017,5, 8862-8868
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    Spin transport properties and spin logic gates in manganese phthalocyanine-based molecular combinational circuits

    W. Zhao, D. Zou, C. Yang and Z. Sun, J. Mater. Chem. C, 2017, 5, 8862
    DOI: 10.1039/C7TC02312J

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