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Perfect spin filtering controlled by an electric field in a bilayer graphene junction: Effect of layer-dependent exchange energy |
| Kitakorn Jatiyanon1, I-Ming Tang2, Bumned Soodchomshom1 |
1 Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
2 Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand |
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Abstract Magneto transport of carriers with a spin-dependent gap in a ferromagnetic-gated bilayer of graphene is investigated. We focus on the effect of an energy gap induced by the mismatch of the exchange fields in the top and bottom layers of an AB-stacked graphene bilayer. The interplay of the electric and exchange fields causes the electron to acquire a spin-dependent energy gap. We find that, only in the case of the anti-parallel configuration, the effect of a magnetic-induced gap will give rise to perfect spin filtering controlled by the electric field. The resolution of the spin filter may be enhanced by varying the bias voltage. Perfect switching of the spin polarization from +100% to -100% by reversing the direction of electric field is predicted. Giant magnetoresistance is predicted to be easily realized when the applied electric field is smaller than the magnetic energy gap. It should be pointed out that the perfect spin filter is due to the layer-dependent exchange energy. This work points to the potential application of bilayer graphene in spintronics.
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Received: 11 January 2016
Revised: 26 February 2016
Accepted manuscript online:
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PACS:
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81.05.ue
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(Graphene)
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72.80.Vp
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(Electronic transport in graphene)
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72.25.-b
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(Spin polarized transport)
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73.43.Qt
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(Magnetoresistance)
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| Fund: Project supported by the Kasetsart University Research and Development Institute (KURDI) and Thailand Research Fund (TRF) (Grant No. TRG5780274). |
Corresponding Authors:
Bumned Soodchomshom
E-mail: Bumned@hotmail.com,fscibns@ku.ac.th
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Cite this article:
Kitakorn Jatiyanon, I-Ming Tang, Bumned Soodchomshom Perfect spin filtering controlled by an electric field in a bilayer graphene junction: Effect of layer-dependent exchange energy 2016 Chin. Phys. B 25 078104
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| [1] |
Novoselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Dubonos S V, Grigorieva I V and Firsov A A 2004 Science 306 666
|
| [2] |
Lin Y M, Dimitrakopoulos C, Jenkins K A, Farmer D B, Chiu H Y, Grill A and Avouris Ph 2010 Science 327 662
|
| [3] |
Schwierz F 2010 Nat. Nanotechnol. 5 487
|
| [4] |
Kheirabadi N, Shafiekhani A and Fathipour M 2014 Superlatt. Microstruct. 74 123
|
| [5] |
Geim A K and Novoselov K S 2007 Nat. Mater. 6 183
|
| [6] |
Katsnelson M I and Novoselov K S 2007 Solid State Commun. 143 3
|
| [7] |
Stander N, Huard B and Goldhaber-Gordon D 2009 Phys. Rev. Lett. 102 026807
|
| [8] |
Haugen H, Huertas-Hernando D and Brataas A 2008 Phys. Rev. B 77 115406
|
| [9] |
Swartz A G, Odenthal P M, Hao Y, Ruoff R S and Kawakami R K 2012 ACS Nano 6 10063
|
| [10] |
Cobas E, Friedman A L, van't Erve O M J, Robinson J T and Jonker B T 2012 Nano Lett. 12 3000
|
| [11] |
Yang H X, Hallal A, Terrade D, Waintal X, Roche S and Chshiev M 2013 Phys. Rev. Lett. 110 046603
|
| [12] |
Wang Z, Tang C, Sachs R, Barlas Y and Shi J 2015 Phys. Rev. Lett. 114 016603
|
| [13] |
Park J H and Lee H J 2014 Phys. Rev. B 89 165417
|
| [14] |
Soodchomshoma B, Tanga I M and Hoonsawata R 2009 Physica E 41 1310
|
| [15] |
Bai J, Cheng R, Xiu F, Liao L, Wang M, Shailos A, Wang K L, Huang Y and Duan V 2010 Nat. Nanotechnol. 5 655
|
| [16] |
Song Y and Dai G 2015 Appl. Phys. Lett. 106 223104
|
| [17] |
Zhang Y T, Jiang H, Sun Q F and Xie X C 2010 Phys. Rev. B 81 165404
|
| [18] |
Soodchomshom B and Chantngarm P 2011 J. Supercond. Nov. Magn. 24 1885
|
| [19] |
Fujita T, Jalil M B A and Tan S G 2010 Appl. Phys. Lett. 97 043508
|
| [20] |
Grujić M M, Tadić M Z and Peeters F M 2014 Phys. Rev. Lett. 113 046601
|
| [21] |
Castro N A H, Guinea F, Peres N M R, Novoselov K S and Geim A K 2009 Rev. Mod. Phys. 81 109
|
| [22] |
Zhang Y, Tang T T, Girit C, Hao Z, Martin M C, Zettl A, Crommie M F, Shen Y and Wang F 2009 Nature 459 820
|
| [23] |
Katsnelson M I, Novoselov K S and Geim A K 2006 Nat. Phys. 2 620
|
| [24] |
Derakhshan V and Cheraghchi H 2014 J. Magn. Magn. Mater. 357 29
|
| [25] |
Semenov Y G, Zavada J M and Kim K W 2008 Phys. Rev. B 77 235415
|
| [26] |
Cheraghchi H and Adinehvand F 2012 J. Phys. Condens. Matter 24 045303
|
| [27] |
Castro E V, Lòpez-Sancho M P and Vozmediano M A H 2011 Phys. Rev. B 84 075432
|
| [28] |
Michetti P and Recher P 2011 Phys. Rev. B 84 125438
|
| [29] |
Castro E V, Peres N M R, Stauber T and Silva N A P 2008 Phys. Rev. Lett. 100 186803
|
| [30] |
Lee K, Fallahazad B, Xue J, Dillen D C, Kim K, Taniguchi T, Watanabe K and Tutuc E 2014 Science 345 58
|
| [31] |
Hung N V, Bournel A and Dollfus P 2011 J. Appl. Phys. 109 073717
|
| [32] |
Yokoyama T 2008 Phys. Rev. B 77 073413
|
| [33] |
McCann E and Fal'ko V I 2006 Phys. Rev. Lett. 96 086805
|
| [34] |
Landauer R 1957 IBM J. Res. Dev. 1 223
|
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