CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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A comparison of the transport properties of bilayer graphene, monolayer graphene, and two-dimensional electron gas |
Sun Li-Feng (孙立风)a, Dong Li-Min (董利民)b, Wu Zhi-Fang (吴志芳)a, Fang Chao (房超)a |
a Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
b Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China |
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Abstract We studied and compared the transport properties of charge carriers in the bilayer graphene, the monolayer graphene, and the conventional semiconductors (the two-dimensional electron gas (2DEG)). It is elucidated that the normal incidence transmission in the bilayer graphene is identical to that in the 2DEG but totally different from that in the monolayer graphene. However, the resonant peaks appear in the non-normal incidence transmission profile for a high barrier in the bilayer graphene, which do not occur in the 2DEG. Furthermore, there are tunneling and forbidden regions in the transmission spectrum for each material, and the division of the two regions has been given in the work. The tunneling region covers a wide range of the incident energy for the two graphene systems, but only exists under specific conditions for the 2DEG. The counterparts of the transmission in the conductance profile are also given for the three materials, which may be used as high-performance devices based on the bilayer graphene.
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Received: 22 January 2013
Revised: 25 February 2013
Accepted manuscript online:
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PACS:
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72.80.Vp
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(Electronic transport in graphene)
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73.23.Ad
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(Ballistic transport)
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73.40.Gk
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(Tunneling)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11104156), the Postdoctoral Science Foundation of China (Grant No. 2012M510405), the Independent Research and Development Fund of Tsinghua University, China (Grant No. 20121087948), and the Beijing Key Lab of Fine Ceramics Opening Fund, China (Grant No. 2012200110). |
Corresponding Authors:
Fang Chao
E-mail: fangchao@mail.tsinghua.edu.cn
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Cite this article:
Sun Li-Feng (孙立风), Dong Li-Min (董利民), Wu Zhi-Fang (吴志芳), Fang Chao (房超) A comparison of the transport properties of bilayer graphene, monolayer graphene, and two-dimensional electron gas 2013 Chin. Phys. B 22 077201
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[1] |
Beenakker C W 2008 Rev. Mod. Phys. 80 1337
|
[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] |
Novoselov K S, Geim A K, Morozov S V, Jiang D, Zhang Y, Dubonos S V, Gregorieva I V and Firsov A A 2004 Science 306 666
|
[4] |
Zhang Y, Tan Y W, Stormer H L and Kim P 2005 Nature 438 201
|
[5] |
Zhang Y, Jiang Z, Small J P, Purewal M S, Tan Y W, Fazlollahi M, Chudow J D, Jaszczak J A, Stormer H L and Kim P 2006 Phys. Rev. Lett. 96 136806
|
[6] |
Katsnelson M I, Novoselov K S and Geim A K 2006 Nature Phys. 2 620
|
[7] |
Novoselov K S, Geim A K, Morozov S V, Jiang D, Katsnelson M I, Gregorieva I V, Dubonos S V and Firsov A A 2005 Nature 438 197
|
[8] |
Gusynin V P and Sharapov S G 2005 Phys. Rev. Lett. 95 146801
|
[9] |
McCann E and Falko V I 2006 Phys. Rev. Lett. 96 086805
|
[10] |
Zheng Y and Ando T 2002 Phys. Rev. B 65 245420
|
[11] |
Zhang Y, Small J P, Amori M E S and Kim P 2005 Phys. Rev. Lett. 94 176803
|
[12] |
Novoselov K S, McCann E, Mozorov S V, Fal'ko V I, Katsnelson M I, Zeitler U, Jiang D, Schedin F and Geim A K 2006 Nature Phys. 2 177
|
[13] |
Tworzydlo J, Trauzettel B, Titov M, Rycerz A and Beenakker C W J 2006 Phys. Rev. Lett. 96 246802
|
[14] |
Katsnelson M I 2006 Eur. Phys. J. B 52 151
|
[15] |
Hu S J, Du W, Zhang G P, Gao M, Lu Z Y and Wang X Q 2012 Chin. Phys. Lett. 29 057201
|
[16] |
Beenakker C W J 2006 Phys. Rev. Lett. 97 067007
|
[17] |
Bhattacharjee S and Sengupta K 2006 Phys. Rev. Lett. 97 217001
|
[18] |
Bai C X and Zhang X D 2007 Phys. Rev. B 76 075430
|
[19] |
McCann E 2006 Phys. Rev. B 74 161403
|
[20] |
Ohta T, Bostwick A, Seyller T, Horn K and Rotenberg E 2006 Science 313 951
|
[21] |
Oostinga J B, Heersche H B, Liu X, Morpurgo A and Vandersypen L M K 2008 Nature Mater. 7 151
|
[22] |
Castro E V, Novoselov K S, Morozov S V, Peres N M R, Lopes dos Santos J, Nilsson J, Guinea F, Geim A K and Castro Neto A H 2007 Phys. Rev. Lett. 99 216802
|
[23] |
San-Jose P, Prada E, McCann E and Schomerus H 2009 Phys. Rev. Lett. 102 247204
|
[24] |
Nilsson J, Castro Neto A H, Guinea F and Peres N M R 2007 Phys. Rev. B 76 165416
|
[25] |
Masir M R, Vasilopoulos P and Peeters F M 2009 Phys. Rev. B 79 035409
|
[26] |
Park S H and Sim H S 2009 Phys. Rev. Lett. 103 196802
|
[27] |
Mikitik G P and Sharlai Yu V 2008 Phys. Rev. B 77 113407
|
[28] |
Mukhopadhyay S, Biswas R and Sinha C 2010 Phys. Status Solidi B 247 342
|
[29] |
Chen X and Tao J W 2009 Appl. Phys. Lett. 94 262102
|
[30] |
Sun L F and Guo Y 2011 J. Appl. Phys. 109 123719
|
[31] |
Zhang G P and Qin Z J 2011 Chem. Phys. Lett. 516 225
|
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