Enhanced spin polarization and valley polarization in monolayer MoS2 junctions

Journal of Physics. Condensed Matter : an Institute of Physics Journal
R-Y YuanY Guo

Abstract

Special resonant modes in unique quantum structure can enhance spin and valley filtering effect. Hence we investigated resonant tunneling effect with large incident angles through single electric barrier in monolayer MoS2 junctions consisting of normal/ferromagnetic/normal parts. We found that for large incident angles the spin- and valley-dependent line-type resonances appear in the transmission and conductance spectra, which results in the transmission probabilities of spin-up and spin-down electrons at K and [Formula: see text] valleys being all improved to 100[Formula: see text] but for different special gate voltage. Therefore, both the spin and valley polarizations are increased, the perfect 100[Formula: see text] spin and valley polarizations are observed. Furthermore, the numbers of the line-type resonant peaks are multiplied with the increasing of the barrier's width. And the spin- and valley-polarized direction can be switched by changing the gate voltage. These intriguing features indicate that a valley or spin filter with high accuracy and efficiency can be designed, which is controllable by the electric field.

References

Jun 1, 1987·Physical Review C: Nuclear Physics·B H McKellar, G J Stephenson
Oct 6, 1986·Physical Review Letters·M Büttiker
Nov 17, 2001·Science·S A WolfD M Treger
Oct 23, 2004·Science·K S NovoselovA A Firsov
Jul 20, 2005·Proceedings of the National Academy of Sciences of the United States of America·K S NovoselovA K Geim
Aug 7, 2007·Physical Review Letters·B HuardD Goldhaber-Gordon
Mar 17, 2010·Nano Letters·Andrea SplendianiFeng Wang
Apr 3, 2010·Science·Changgu LeeJames Hone
Jun 1, 2010·Nature Nanotechnology·Frank Schwierz
Feb 1, 2011·Nature Nanotechnology·B RadisavljevicA Kis
Jun 4, 2011·Physical Review Letters·Zhenhua WuKai Chang
Jun 19, 2012·Nature Nanotechnology·Kin Fai MakTony F Heinz
Feb 7, 2013·Physical Review Letters·Hai-Zhou LuShun-Qing Shen
Jul 28, 2013·Nature·A K Geim, I V Grigorieva

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Citations

Dec 1, 2018·Nanotechnology·Chaoming LiuShengqiang Zhou

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