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A kind of spintronics is designed by doping the transition metal into Si clusters. Their spin-polarized electron transport properties are investigated by using the first principle analysis. Calculation shows that Fe, Cr and Mn atom doped clusters give the largest spin-polarized transmission coefficients in all the clusters. From Sc to Ni doped clusters, spin filter efficiencies of the systems increase gradually, and the maximal spin filter coefficiency appears in the Fe doped system. The ability to induce the spin-polarized electron transport of the cluster in junction is not cosistent with the magnetic moment of cluster under isolated states.
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Keywords:
- Si cluster /
- spin polarized transport /
- density functional theory /
- nonequilibrium Green's function method
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[2] Venkataraman L, Klare J E 2006 Nature 442 904
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[14] Khanna S N, Rao B K, Jena P 2002 Phys. Rev. Lett. 89 016803
[15] Hagelberg F, Xiao C, William Jr A L 2003 Phys. Rev. B 67 035426
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[19] Bernand M A, Seneor P, Lidgi N, Muñoz M, Cros V, Fusil S, Bouzehouane K, Deranlot C, Vaures A, Petroff F, Fert A 2006 Appl. Phys. Lett. 89 062502
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[21] Han R S 2010 Physics 39 753 (in Chinese) [韩汝珊 2010 物理 39 753]
[22] Taylor J, Guo H, Wang J 2001 Phys. Rev. B 63 245407
[23] Zhao Y, Hu Y, Liu L, Zhu Y, Hong G 2011 Nano Lett. 11 2088
[24] Bin W, Jian W 2011 Phys. Rev. B 84 165401
[25] Perdew J P, Zunger A 1981 Phys. Rev. B 23 5048
[26] Datta S 2005 Quantum Transport:Atom to Transistor (Cambridge:Cambridge University Press)
[27] Zheng J M 2008 Ph. D. Dissertation (Xian:Northwest University) (in Chinese) [郑继明 2008 博士学位论文(西安:西北大学)]
[28] Reveles J U, Clayborne P A, Reber A C, Khanna S N, Pradhan K, Sen P, Pederson M R 2009 Nat. Chem. 1 310
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[1] Reed M A, Zhou C 1997 Science 278 252
[2] Venkataraman L, Klare J E 2006 Nature 442 904
[3] Quinn J R, Foss F W 2007 J. Am. Chem. Soc. 129 6714
[4] Venkataraman L, Klare J E 2006 Nano Lett. 6 458
[5] Dadosh T, Gordin Y 2005 Nature 436 677
[6] Igor Ž, Jaroslav F, Sarma S D 2004 Rev. Mod. Phys. 76 323
[7] Xiong Z H, Wu D, Vardeny Z V, Shi J 2004 Nature 427 821
[8] Rocha A R, Víctor M G, Steve W B, Colin J L, Jaime F, Stefano S 2005 Nat. Mater. 4 335
[9] Salvador B L, Mihajlo V, Markus K, Chou M Y 2010 Phys. Rev. Lett. 104 076807
[10] Petta J R, Slater S K, Ralph D C 2004 Phys. Rev. Lett. 96 136601.
[11] Zheng X L, Zheng J M, Ren Z Y, Guo P, Tian J S, Bai J T 2009 Acta Phys. Sin. 58 5709 (in Chinese) [郑新亮, 郑继明, 任兆玉, 郭平, 田进寿, 白晋涛 2009 58 5709]
[12] Dai Z X, Zheng X H, Shi X Q, Zeng Z 2005 Phys. Rev. B 72 205408
[13] Ling Z K, James R C 2008 Phys. Rev. B 77 073401
[14] Khanna S N, Rao B K, Jena P 2002 Phys. Rev. Lett. 89 016803
[15] Hagelberg F, Xiao C, William Jr A L 2003 Phys. Rev. B 67 035426
[16] Hidefumi H, Takehide M, Toshihiko K 2001 Phys. Rev. Lett. 86 1733
[17] Desmicht R, Faini G, Cros, V, Fert A, Petroff F, Vaure's A 1998 Appl. Phys. Lett. 72 386
[18] Sordan R, Balasubramanian K, Burghard M, Kern K 2005 Appl. Phys. Lett. 87 013106
[19] Bernand M A, Seneor P, Lidgi N, Muñoz M, Cros V, Fusil S, Bouzehouane K, Deranlot C, Vaures A, Petroff F, Fert A 2006 Appl. Phys. Lett. 89 062502
[20] Chen H 2007 Physics 36 910 (in Chinese) [陈灏 2007 物理 36 910]
[21] Han R S 2010 Physics 39 753 (in Chinese) [韩汝珊 2010 物理 39 753]
[22] Taylor J, Guo H, Wang J 2001 Phys. Rev. B 63 245407
[23] Zhao Y, Hu Y, Liu L, Zhu Y, Hong G 2011 Nano Lett. 11 2088
[24] Bin W, Jian W 2011 Phys. Rev. B 84 165401
[25] Perdew J P, Zunger A 1981 Phys. Rev. B 23 5048
[26] Datta S 2005 Quantum Transport:Atom to Transistor (Cambridge:Cambridge University Press)
[27] Zheng J M 2008 Ph. D. Dissertation (Xian:Northwest University) (in Chinese) [郑继明 2008 博士学位论文(西安:西北大学)]
[28] Reveles J U, Clayborne P A, Reber A C, Khanna S N, Pradhan K, Sen P, Pederson M R 2009 Nat. Chem. 1 310
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