Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 14, 2016
Previous Article Next Article

Chemically functionalized germanene for spintronic devices: a first-principles study

Author affiliations

Abstract

We have carried out first-principles calculations to explore various chemically functionalized germanene nanomaterials as two-dimensional spintronic devices. The germanene functionalized with O on one side and H on the other side is a ferromagnetic metal, and the phenomenon of negative differential conductance is observed. Moreover, we construct a spin-filter device from it, and about 15% spin filter efficiency is achieved in its ground state by using finite bias. The germanene semi-functionalized with a methyl (–CH3) group is a ferromagnetic semiconductor with a small direct bandgap, and it has highly spin-polarized electronic and transport properties. We proposed that a spin-valve nanodevice with a giant magnetoresistance of up to 107% can be obtained from the semi-methylated germanene nanostructure by introducing an achievable magnetic field to stabilize its metal-like ferromagnetic state. Our findings could be helpful for practical applications of two-dimensional germanane-based nanomaterials in spintronic devices in the future.

Graphical abstract: Chemically functionalized germanene for spintronic devices: a first-principles study

Back to tab navigation

Supplementary files

Article information


Submitted
31 Dec 2015
Accepted
29 Feb 2016
First published
01 Mar 2016

Phys. Chem. Chem. Phys., 2016,18, 9809-9815
Article type
Paper

Chemically functionalized germanene for spintronic devices: a first-principles study

J. Zhao and H. Zeng, Phys. Chem. Chem. Phys., 2016, 18, 9809
DOI: 10.1039/C5CP08055J

Social activity

Search articles by author

Spotlight

Advertisements