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Photon-mediated spin-polarized current in a quantum dot under thermal bias |
| Feng Chi(迟锋)1, Liming Liu(刘黎明)1, Lianliang Sun(孙连亮)2 |
1 School of Electronic and Information Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528400, China;
2 College of Science, North China University of Technology, Beijing 100041, China |
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Abstract Spin-polarized current generated by thermal bias across a system composed of a quantum dot (QD) connected to metallic leads is studied in the presence of magnetic and photon fields. The current of a certain spin orientation vanishes when the dot level is aligned to the lead's chemical potential, resulting in a 100% spin-polarized current. The spin-resolved current also changes its sign at the two sides of the zero points. By tuning the system's parameters, spin-up and spin-down currents with equal strength may flow in opposite directions, which induces a pure spin current without the accompany of charge current. With the help of the thermal bias, both the strength and the direction of the spin-polarized current can be manipulated by tuning either the frequency or the intensity of the photon field, which is beyond the reach of the usual electric bias voltage.
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Received: 22 October 2016
Revised: 17 December 2016
Accepted manuscript online:
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PACS:
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73.21.La
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(Quantum dots)
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72.15.Jf
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(Thermoelectric and thermomagnetic effects)
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73.50.Lw
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(Thermoelectric effects)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61274101 and 51362031), the Initial Project for High-Level Talents of UESTC, Zhongshan Insitute, China (Grant No. 415YKQ02), and China Postdoctoral Science Foundation (Grant No. 2014M562301). |
Corresponding Authors:
Feng Chi
E-mail: chifeng@semi.ac.cn
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Cite this article:
Feng Chi(迟锋), Liming Liu(刘黎明), Lianliang Sun(孙连亮) Photon-mediated spin-polarized current in a quantum dot under thermal bias 2017 Chin. Phys. B 26 037304
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| [1] |
Prinz G A 1998 Science 282 1660
|
| [2] |
Hanson R, Kouwenhoven L P, Petta J R, Tarucha S and Vandersypen L M K 2007 Rev. Mod. Phys. 79 1217
|
| [3] |
Guo Y, Wang H, Gu B L and Kawazoe Y 2000 Phys. Rev. B 61 1728
|
| [4] |
Zhang Y T, Guo Y and Li Y C 2005 Phys. Rev. B 72 125334
|
| [5] |
Hanson R, Kouwenhoven L P, Petta J R, Tarucha S and Vandersypen L M K 2007 Rev. Mod. Phys. 79 1217
|
| [6] |
Liu P and Xiong S J 2009 Chin. Phys. B 18 5414
|
| [7] |
Chi F and Li S S 2005 Chin. Phys. Lett. 22 2035
|
| [8] |
Hou T, Wu S Q, Bi A H, Yang F B, Chen J F and Fan M 2009 Chin. Phys. B 18 0783
|
| [9] |
Wu S Q, Hou T, Zhao G P and Yu W L 2010 Chin. Phys. B 19 047202
|
| [10] |
Chi F, Sun L L, Huang L and Zhao J 2011 Chin. Phys. B 20 017303
|
| [11] |
Kato Y, Myers R C, Gossard A C and Awschalom D D 2004 Science 306 5703
|
| [12] |
Wunderlich J, Kaestner B, Sinova J and Jungwirth T 2005 Phys. Rev. Lett. 9 4
|
| [13] |
Mucciolo E R, Chamon C and Marcus C M 2002 Phys. Rev. Lett. 89 146802
|
| [14] |
Xu X D, Wu Y W, Sun B, Huang Q, Cheng J, Steel D G, Bracker A S, Gammon D, Emary C and Sham L J 2007 Phys. Rev. Lett. 99 097401
|
| [15] |
Ebbens A, Krizhanovskii D N, Tartakovskii A I, Pulizzi F, Wright T, Savelyev A V, Skolnick M S and Hopkinson M 2005 Phys. Rev. B 72 073307
|
| [16] |
Koppens F H L, Buizerk C, Tielrooij K J, Vink I T, Nowack K C, Meunier T, Kouwenhoven L P and Vandersypen L M K 2006 Nature 442 766
|
| [17] |
Clark S M, Fu K M C, Ladd T D and Yamamoto Y 2007 Phys. Rev. Lett. 99 040501
|
| [18] |
Frolov S M, Venkatesan A, Yu W, Folk J A and Wegscheider W 2009 Phys. Rev. Lett. 102 116802
|
| [19] |
Wang D K, Sun Q F and Guo H 2004 Phys. Rev. B 69 205312
|
| [20] |
Sun Q F, Xing Y X and Shen S Q 2008 Phys. Rev. B 77 195313
|
| [21] |
Lu H Z and Shen S Q 2008 Phys. Rev. B 77 235309
|
| [22] |
Chi F and Sun Q F 2010 Phys. Rev. B 81 075310
|
| [23] |
Uchida K, Takahashi S, Harii K, Ieda J, Koshibae W, Ando K, Maekawa S and Saitoh E 2008 Nature 455 778
|
| [24] |
Dubi Y and Di Ventra M 2009 Phys. Rev. B 79 081302
|
| [25] |
Qi F H, Yin Y B and Jin G J 2011 Phys. Rev. B 83 075310
|
| [26] |
Zhu L C, Jiang X D, Zu X T and Lü H F 2010 Phys. Lett. A 374 4269
|
| [27] |
Bai X F, Chi F, Zheng J and Li Y N 2012 Chin. Phys. B 21 077301
|
| [28] |
Ying Y B and Jin G J 2010 Appl. Phys. Lett. 96 093104
|
| [29] |
Chi F, Zheng J, Liu Y S and Guo Y 2012 Appl. Phys. Lett. 100 233106
|
| [30] |
Liu Y S, Yang X F, Chi F, Si M S and Guo Y 2012 Appl. Phys. Lett. 101 213109
|
| [31] |
Chen X B, Liu D P, Duan W H and Guo H 2013 Phys. Rev. B 87 085427
|
| [32] |
Tagani M B and Soleimani H R 2013 J. Appl. Phys. 113 143709
|
| [33] |
Jauho A P, Wingreen N S and Meir Y 1994 Phys. Rev. B 50 5528
|
| [34] |
Souza F M, Carrara T L and Vernek E 2011 Phys. Rev. B 84 115322
|
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