Efficient spin-filter and negative differential resistance behaviors in FeN{sub 4} embedded graphene nanoribbon device

Journal Article · Mon Mar 14 00:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4943500· OSTI ID:22596878

Liu, J. B. ^[1]; Yao, K. L. ^[2]; Ni, Y. ^[3]; Wang, S. L. ^[4]

---

1. College of Physics and Electronic Science and Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Hubei Normal University, Huangshi 435002 (China)
2. School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074 (China)
3. Wenhua College, Huazhong University of Science and Technology, Wuhan 430074 (China)
4. School of Science, Hebei University of Engineering, Handan 056038 (China)

In this paper, we propose a new device of spintronics by embedding two FeN{sub 4} molecules into armchair graphene nanoribbon and sandwiching them between N-doped graphene nanoribbon electrodes. Our first-principle quantum transport calculations show that the device is a perfect spin filter with high spin-polarizations both in parallel configuration (PC) and antiparallel configuration (APC). Moreover, negative differential resistance phenomena are obtained for the spin-down current in PC, and the spin-up and spin-down currents in APC. These transport properties are explained by the bias-dependent evolution of molecular orbitals and the transmission spectra.

• OSTI ID: 22596878
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 119; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
DOPED MATERIALS
ELECTRODES
FILTERS
GRAPHENE
IRON NITRIDES
MOLECULES
NANOSTRUCTURES
SPECTRA
SPIN
SPIN ORIENTATION