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The evolution-operator approach is applied to studying photon-electron pumping effects on a quantum dot connected to two magnetic leads in the presence of both via-dot and over-dot tunneling channels. It is found that a microwave field applied to the quantum dot may give rise to charge and spin pumpings at zero-bias voltage for asymmetric magnetic junctions. More interestingly, a pure spin current can be pumped for symmetric magnetic junctions in the anti-parallel magnetization configuration, providing a new scheme for the design of spin batteries.
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Keywords:
- microwave field /
- over-dot tunneling /
- quantum dot /
- pumping current
[1] Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, Molnár S von, Roukes M L, Chtchelkanova A Y, Treger D M 2001 Science 294 1488
[2] Brataas Arne, Tserkovnyak Yaroslav, Bauer Gerrit E W, Halperin Bertrand I 2002 Phys. Rev. B 66 060404(R)
[3] Sun Q F, Guo H, Wang J 2003 Phys. Rev. Lett. 90 258301
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[5] Chen Z G, Wang B G, Xing D Y, Wang J 2004 Appl. Phys. Lett. 85 2553
[6] Shao L B, Xing D Y 2004 Phys. Rev. B 70 201205(R)
[7] Ganichen S D, Bel'kov V V, Tarasenko S A, Danilov S N, Giglberger S, Hoffmann C, Ivchenko E L, Weiss D, Wegscheider W, Gerl C, Schuh D, Stahl J, Boeck Jo De, Borghs G, Prettl W 2006 Nature Phys. 2 609
[8] Wang B, Wang J, Guo H 2003 Phys. Rev. B 67 092408
[9] Brataas A, Tserkovnyak Y, Bauer G E W, Halperin B 2002 Phys. Rev. B 66 060404
[10] Oosterkamp T H, Kouwenhoven L P, Koden A E A, van der Vaart N C, Harmans C J P M 1997 Phys. Rev. Lett. 78 1536
[11] Sun Q F, Lin T H 1997 Phys. Rev. B 56 3591
[12] Sun Q F, Wang J, Lin T H 1998 Phys. Rev. B 58 13007
[13] Ma Z S, Zhu Y, Li X Q, Lin T H, Su Z B 2004 Phys. Rev. B 69 045302
[14] Qin H, Holleitner A W, Eberl K, Blick R H 2001 Phys. Rev. B 64 24130(R)
[15] Taranko R, Kwapiński T, Taranko E 2004 Phys. Rev. B 69 165306
[16] Kwapiński T, Taranko R, Taranko E 2002 Phys. Rev. B 66 035315
[17] Kwapiński T, Taranko R, Taranko E 2005 Phys. Rev. B 72 125312
[18] Li C S, Yu Y J, Wei Y D, Wang J 2007 Phys. Rev. B 75 035312
[19] Zhou Y Q, Wang R Q, Wang B G, Xing D Y 2007 Phys. Rev. B 76 075343
[20] Wang D K, Sun Q F, Guo H 2004 Phys. Rev. B 69 205312
[21] Deng Y X, Yan X H, Tang N S 2006 Acta Phys. Sin. 55 2027 (in Chinese) [邓宇翔、颜晓红、唐娜斯 2006 55 2027]
[22] Chen X W, Shi Z G, Chen B J, Song K H 2008 Acta Phys. Sin. 57 2421 (in Chinese) [谌雄文、施振刚、谌宝菊、宋克慧 2008 57 2421]
[23] Wu S Q,Chen X W, Sun W L, Wang S J 2004 Acta Phys. Sin. 53 2336 (in Chinese) [吴绍全、谌雄文、孙威立、王顺金 2004 53 2336]
[24] Wu Z J, Zhu K D, Yuan X Z, Zheng H 2005 Acta Phys. Sin. 54 3346 (in Chinese) [吴卓杰、朱卡的、袁晓忠、郑 杭 2005 54 3346]
[25] Ye J F, Ye F, Ding G H 2003 Acta Phys. Sin. 52 468 (in Chinese) [叶剑斐、叶 飞、丁国辉 2003 52 468]
[26] Liu C S, Ma B K, Wang L M 2003 Acta Phys. Sin. 52 2020 (in Chinese) [刘承师、马本堃、王立民 2003 52 2020]
[27] Li P, Deng W J 2009 Acta Phys. Sin. 58 2713 (in Chinese) [李 鹏、邓文基 2009 58 2713]
[28] Yin Y Q, Li H, Ma J N, He Z L, Wang X Z 2009 Acta Phys. Sin. 58 4162 (in Chinese) [尹永琦、李 华、马佳宁、贺泽龙、王选章 2009 58 4162]
[29] Kouwenhoven L P, Jauhar S, McCormick K, Dixon D, McEuen P L, Nazarov Yu V, van der Vaart N C 1994 Phys. Rev. B 50 2019
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[1] Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, Molnár S von, Roukes M L, Chtchelkanova A Y, Treger D M 2001 Science 294 1488
[2] Brataas Arne, Tserkovnyak Yaroslav, Bauer Gerrit E W, Halperin Bertrand I 2002 Phys. Rev. B 66 060404(R)
[3] Sun Q F, Guo H, Wang J 2003 Phys. Rev. Lett. 90 258301
[4] Long W, Sun Q F, Guo H, Wang J 2003 Appl. Phys. Lett. 83 1397
[5] Chen Z G, Wang B G, Xing D Y, Wang J 2004 Appl. Phys. Lett. 85 2553
[6] Shao L B, Xing D Y 2004 Phys. Rev. B 70 201205(R)
[7] Ganichen S D, Bel'kov V V, Tarasenko S A, Danilov S N, Giglberger S, Hoffmann C, Ivchenko E L, Weiss D, Wegscheider W, Gerl C, Schuh D, Stahl J, Boeck Jo De, Borghs G, Prettl W 2006 Nature Phys. 2 609
[8] Wang B, Wang J, Guo H 2003 Phys. Rev. B 67 092408
[9] Brataas A, Tserkovnyak Y, Bauer G E W, Halperin B 2002 Phys. Rev. B 66 060404
[10] Oosterkamp T H, Kouwenhoven L P, Koden A E A, van der Vaart N C, Harmans C J P M 1997 Phys. Rev. Lett. 78 1536
[11] Sun Q F, Lin T H 1997 Phys. Rev. B 56 3591
[12] Sun Q F, Wang J, Lin T H 1998 Phys. Rev. B 58 13007
[13] Ma Z S, Zhu Y, Li X Q, Lin T H, Su Z B 2004 Phys. Rev. B 69 045302
[14] Qin H, Holleitner A W, Eberl K, Blick R H 2001 Phys. Rev. B 64 24130(R)
[15] Taranko R, Kwapiński T, Taranko E 2004 Phys. Rev. B 69 165306
[16] Kwapiński T, Taranko R, Taranko E 2002 Phys. Rev. B 66 035315
[17] Kwapiński T, Taranko R, Taranko E 2005 Phys. Rev. B 72 125312
[18] Li C S, Yu Y J, Wei Y D, Wang J 2007 Phys. Rev. B 75 035312
[19] Zhou Y Q, Wang R Q, Wang B G, Xing D Y 2007 Phys. Rev. B 76 075343
[20] Wang D K, Sun Q F, Guo H 2004 Phys. Rev. B 69 205312
[21] Deng Y X, Yan X H, Tang N S 2006 Acta Phys. Sin. 55 2027 (in Chinese) [邓宇翔、颜晓红、唐娜斯 2006 55 2027]
[22] Chen X W, Shi Z G, Chen B J, Song K H 2008 Acta Phys. Sin. 57 2421 (in Chinese) [谌雄文、施振刚、谌宝菊、宋克慧 2008 57 2421]
[23] Wu S Q,Chen X W, Sun W L, Wang S J 2004 Acta Phys. Sin. 53 2336 (in Chinese) [吴绍全、谌雄文、孙威立、王顺金 2004 53 2336]
[24] Wu Z J, Zhu K D, Yuan X Z, Zheng H 2005 Acta Phys. Sin. 54 3346 (in Chinese) [吴卓杰、朱卡的、袁晓忠、郑 杭 2005 54 3346]
[25] Ye J F, Ye F, Ding G H 2003 Acta Phys. Sin. 52 468 (in Chinese) [叶剑斐、叶 飞、丁国辉 2003 52 468]
[26] Liu C S, Ma B K, Wang L M 2003 Acta Phys. Sin. 52 2020 (in Chinese) [刘承师、马本堃、王立民 2003 52 2020]
[27] Li P, Deng W J 2009 Acta Phys. Sin. 58 2713 (in Chinese) [李 鹏、邓文基 2009 58 2713]
[28] Yin Y Q, Li H, Ma J N, He Z L, Wang X Z 2009 Acta Phys. Sin. 58 4162 (in Chinese) [尹永琦、李 华、马佳宁、贺泽龙、王选章 2009 58 4162]
[29] Kouwenhoven L P, Jauhar S, McCormick K, Dixon D, McEuen P L, Nazarov Yu V, van der Vaart N C 1994 Phys. Rev. B 50 2019
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