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基于非平衡态格林函数方法，理论研究了与四个电极耦合的双量子点系统中的自旋和电荷能斯特效应，考虑了不同电极的磁动量结构和量子点内以及量子点间电子的库仑相互作用对热电效应的影响.结果表明铁磁端口中的磁化方向能够有效地调节能斯特效应：当电极1和电极3中的磁化方向反平行排列时，通过施加横向的温度梯度，系统中将会出现纯的自旋能斯特效应；当电极4从普通金属端口转变为铁磁金属端口时，将同时观测到电荷和自旋能斯特效应.研究发现，能斯特效应对于铁磁电极极化强度的依赖程度较弱，但对库仑排斥作用十分敏感.在量子点内和点间库仑排斥作用的影响下，自旋及电荷能斯特系数有望提高两个数量级.
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[1] Dubi Y, Di Ventra M 2011 Rev. Mod. Phys. 83 131
[2] Scheibner R, Buhmann H, Reuter D, Kiselev M N, Molenkamp L W 2005 Phys. Rev. Lett. 95 176602
[3] Chen X B, Duan W H 2015 Acta Phys. Sin. 64 186302 (in Chinese) [陈晓彬, 段文晖 2015 物理学报 64 186302]
[4] Xu Z A, Shen J Q, Zhao S R, Zhang Y J, Ong C K 2005 Phys. Rev. B 72 144527
[5] Lee W L, Watauchi S, Miller V L, Cava R J, Ong N P 2004 Phys. Rev. Lett. 93 226601
[6] Banerjee A, Fauque B, Izawa K, Miyake A, Sheikin I, Flouquet J, Lenoir B, Behnia K 2008 Phys. Rev. B 78 161103
[7] Small J P, Perez K M, Kim P 2003 Phys. Rev. Lett. 91 256801
[8] Scheibner R, Buhmann H, Reuter D, Kiselev M N, Molenkamp L W 2005 Phys. Rev. Lett. 95 176602
[9] Fert A 2008 Rev. Mod. Phys. 80 1517
[10] Guo Y, Gu B L, Yoshiyuki K 2000 Acta Phys. Sin. 49 1814 (in Chinese) [郭永, 顾秉林, 川添良幸 2000 物理学报 49 1814]
[11] Seki T, Hasegawa Y, Mitani S, Takahashi S, Imamura H, Maekawa S, Nitta J, Takanashi K 2008 Nature Mater. 7 125
[12] Checkelsky J G, Ong N P 2009 Phys. Rev. B 80 081413
[13] Cyr-Choiniere O, Daou R, Laliberte F, LeBoeuf D, Doiron-Leyraud N, Chang J, Yan J Q, Cheng J G, Zhou J S, Goodenough J B, Pyon S, Takayama T, Takagi H, Tanaka Y, Taillefer L 2009 Nature 458 743
[14] Tauber K, Gradhand M, Fedorov D V, Mertig I 2012 Phys. Rev. Lett. 109 026601
[15] Cheng S G, Xing Y X, Sun Q F, Xie X C 2008 Phys. Rev. B 78 045302
[16] Bulka B R, Kostyrko T 2004 Phys. Rev. B 70 205333
[17] Sun Q F, Xing Y X, Shen S Q 2008 Phys. Rev. B 77 195313
[18] Jonson M, Girvin S M 1984 Phys. Rev. B 29 1939
[19] Oji H, Streda P 1985 Phys. Rev. B 31 7291
[20] Sun Q F, Xie X C 2006 Phys. Rev. B 73 235301
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