| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Tunneling Negative Magnetoresistance via $\delta$ Doping in a Graphene-Based Magnetic Tunnel Junction |
| Jian-Hui Yuan1**, Ni Chen1, Hua Mo1, Yan Zhang1, Zhi-Hai Zhang2** |
1Department of Physics, Guangxi Medical University, Nanning 530021
2School of Physics and Electronics, Yancheng Teachers University, Yancheng 224051
|
|
| Cite this article: |
|
Jian-Hui Yuan, Ni Chen, Hua Mo et al 2016 Chin. Phys. Lett. 33 037302 |
|
|
|
|
Abstract We investigate the tunneling magnetoresistance via $\delta$ doping in a graphene-based magnetic tunnel junction in detail. It is found that the transmission probability and the conductance oscillates with the position and the aptitude of the $\delta$ doping. Also, both the transmission probability and the conductance at the parallel configuration are suppressed by the magnetic field more obviously than that at the antiparallel configuration, which implies a large negative magnetoresistance for this device. The results show that the negative magnetoresistance of over 300% at $B=1.0$ T is observed by choosing suitable doped parameters, and the temperature plays an important role in the magnetoresistance. Thus it is possible to open a way to effectively manipulate the magnetoresistance devices, and to make a type of magnetoresistance device by controlling the structural parameter of the $\delta$ doping.
|
|
|
Received: 23 October 2015
Published: 31 March 2016
|
|
| PACS: |
73.23.-b
|
(Electronic transport in mesoscopic systems)
|
| |
03.65.Pm
|
(Relativistic wave equations)
|
| |
73.43.Cd
|
(Theory and modeling)
|
| |
75.70.Ak
|
(Magnetic properties of monolayers and thin films)
|
|
|
|
|
|
| [1] | Novoselov K S, Geim A K, Morozov S V et al 2004 Science 306 666 | | [2] | Castro Neto A H, Guinea F, Peres N M R, Novoselov K S and Geim A K 2009 Rev. Mod. Phys. 81 109 | | [3] | Kim K S, Zhao Y et al 2009 Nature 457 706 | | [4] | Li X, Cai W, An J et al 2009 Science 324 1312 | | [5] | Friedman A L, Robinson J T, Perkins F K and Campbell P M 2011 Appl. Phys. Lett. 99 022108 | | [6] | Xu H, Heinzel T, Evaldsson M and Zozoulenko I V 2008 Phys. Rev. B 77 245401 | | [7] | Masir M R, Vasilopoulos P and Peeters F M 2010 Phys. Rev. B 82 115417 | | [8] | Guo Y Y and Guo Y 2009 J. Appl. Phys. 105 063717 | | [9] | Zhai F and Chang K 2008 Phys. Rev. B 77 113409 | | [10] | Masir M R, Vasilopoulos P and Peeters F M 2009 New J. Phys. 11 095009 | | [11] | Tan L Z, Park C H and Louie S G 2010 Phys. Rev. B 81 195426 | | [12] | Park C H, Yang L, Son Y W, Cohen M L and Louie S G 2008 Nat. Phys. 4 213 | | [13] | Biswas R, Biswas A, Hui N and Sinha C 2010 J. Appl. Phys. 108 043708 | | [14] | Luca D A and Alessandro D M 2009 Phys. Rev. B 79 045420 | | [15] | Friedman A L, Erve O M J, Robinson J T, WhitenerK E and Jonker B T 2015 ACS Nano 9 6747 | | [16] | Erve O M J, Friedman A L, Li C H, Robinson J T, Connell J, Lauhon L J and Jonker B T 2015 Nat. Commun. 6 7541 | | [17] | Friedman A L, Erve O M J, Li C H, Robinson J T and Jonker B T 2014 Nat. Commun. 5 3161 | | [18] | Cobas E, Friedman A L, Erve O M J, Robinson J T and Jonker B T 2013 IEEE Trans. Magn. 49 4343 | | [19] | Friedman A L, Tedesco J L, Campbell P M et al 2010 Nano Lett. 10 3962 | | [20] | Matis B R, Bulat F A, Friedman A L, Houston B H and Baldwin J W 2012 Phys. Rev. B 85 195437 | | [21] | Cerchez M, Hugger S, Heinzel T and Schulz N 2007 Phys. Rev. B 75 035341 | | [22] | Matulis A, Peeters F M and Vasilopoulos P 1994 Phys. Rev. Lett. 72 1518 | | [23] | Xu H Z and Shi Z 2004 Phys. Rev. B 69 237201 | | [24] | Lu J D 2009 Appl. Surf. Sci. 255 7348 | | [25] | Lu J D, Xu B, Liu H Y and Dai H M 2014 Phys. Lett. A 378 286 | | [26] | Myoung N and Ihm G 2011 J. Appl. Phys. 109 053716 | | [27] | Ghosh S and Sharma M 2009 J. Phys.: Condens. Matter 21 292204 | | [28] | Ghosh S and Sharma M 2011 J. Phys.: Condens. Matter 23 055501 | | [29] | Yuan J H, Zhang J J, Zeng Q J, Zhang J P and Cheng Z 2011 Physica B 406 4214 | | [30] | Yuan J H, Zhang Y, Guo X, Zhang J and Mo H 2015 Solid State Commun. 206 31 | | [31] | Datta S 1997 Electronic Transport in Mesoscopic Systems (Cambridge: Cambridge University Press) | | [32] | van Wees B J, van Houten H, Beenakker C W J, Williamson J G, Kouwenhoven L P, van der Marel D and Foxon C T 1988 Phys. Rev. Lett. 60 848 |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
