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利用扫描隧道显微镜和扫描隧道谱(STM/STS)及单原子操纵,系统研究了单个钴原子(Co) 及其团簇在Rh (111)和Pd (111)两种表面的吸附和自旋电子输运性质. 发现单个Co原子在Rh (111)上有两种不同的稳定吸附位,分别对应于hcp和fcc空位, 他们的高度明显不同,在针尖的操纵下单个Co原子可以在两种吸附位之间相互转化. 在这两种吸附位的单个Co原子的STS谱的费米面附近都存在很显著的峰形结构, 经分析认为Rh (111)表面单个Co原子处于混价区,因此这一峰结构是d轨道共振 和近藤共振共同作用的结果.对于Rh (111)表面上的Co原子二聚体和三聚体, 其费米面附近没有观测到显著的峰,这可能是由于原子间磁交换相互作用 和原子间轨道杂化引起的体系态密度改变所共同导致.与Rh (111)表面不同, 在Pd (111)表面吸附的单个Co原子则表现出均一的高度.并且对于Pd (111)表面所有 单个Co原子及其二聚体和三聚体,在其STS谱的费米面附近均未探测到显著的电子结构, 表明Co原子吸附于Pd (111)表面具有与Rh (111)表面上不同的原子-衬底相互作用与自旋电子输运性质.
[1] Jiang Y H, Liu L W, Yang K, Xiao W D, Gao H J 2011 Chin. Phys. B 20 096401
[2] Zhao M H, Sun J J, Wang D, Zou Z Q, Liang Q 2010 Acta Phys. Sin. 59 636 (in Chinese) [赵明海, 孙静静, 王丹, 邹志强, 梁齐 2010 物理学报 59 636]
[3] Zhang H G, Mao J H, Liu Q, Jiang N, Zhou H T, Guo H M, Shi D X, Gao H J 2010 Chin. Phys. B 19 018105
[4] Xu M J, Mayandi J, Wang X S, Jia J F, Xue Q K, Dou X M 2010 Chin. Phys. B 19 106102
[5] Dou W D, Zhang H J, Bao S N 2010 Chin. Phys. B 19 026803
[6] Madhavan V, Chen W, Jamneala T, Crommie M F, Wingreen N S 1998 Science 280 567
[7] Manoharan H C, Lutz C P, Eigler D M 2000 Nature 403 512
[8] Knorr N, Schneider M A, Diekhoner L, Wahl P, Kern K 2002 Phys. Rev. Lett. 88 096804
[9] Nagaoka K, Jamneala T, Grobis M, Crommie M F 2002 Phys. Rev. Lett. 88 077205
[10] Schneider M A, Vitali L, Knorr N, Kern K 2002 Phys. Rev. B 65 121406
[11] Wahl P, Diekhoner L, Schneider M A, Vitali L, Wittich G, Kern K 2004 Phys. Rev. Lett. 93 176603
[12] Otte A F, Ternes M, von Bergmann K, Loth S, Brune H, Lutz C P, Hirjibehedin C F, Heinrich A J 2008 Nature Physics 4 847
[13] Hirjibehedin C F, Lin C Y, Otte A F, Ternes M, Lutz C P, Jones B A, Heinrich A J 2007 Science 317 1199
[14] Balashov T, Schuh T, Takács A F, Ernst A, Ostanin S, Henk J, Mertig I, Bruno P, Miyamachi T, Suga S, Wulfhekel W 2009 Phys. Rev. Lett. 102 257203
[15] Chen W, Jamneala T, Madhavan V, Crommie M F 1999 Phys. Rev. B 60 R8529
[16] Jamneala T, Madhavan V, Crommie M F 2001 Phys. Rev. Lett. 87 256804
[17] Wahl P, Simon P, Diekhöner L, Stepanyuk V S, Bruno P, Schneider M A, Kern K 2007 Phys. Rev. Lett. 98 056601
[18] Neel N, Kroger J, Berndt R, Wehling T O, Lichtenstein A I, Katsnelson M I 2008 Phys. Rev. Lett. 101 266803
[19] Gambardella P, Rusponi S, Veronese M, Dhesi S S, Grazioli C, Dallmeyer A, Cabria I, Zeller R, Dederichs P H, Kern K, Carbone C, Brune H 2003 Science 300 1130
[20] Etz C, Zabloudil J, Weinberger P, Vedmedenko E Y 2008 Phys. Rev. B 77 184425
[21] Blonski P, Lehnert A, Dennler S, Rusponi S, Etzkorn M, Moulas G, Bencok P, Gambardella P, Brune H, Hafner J 2010 Phys. Rev. B 81 104426
[22] Feng W, Feng X Y, Zhao A D, Li B, Wang B, Hou J G, Yang J L unpublished results
[23] Liu K, Wang B 2011 Acta Phys. Sin. 60 046801 (in Chinese) [刘锴, 王兵 2011 物理学报 60 046801]
[24] Qiu Y F, Du W H, Wang B 2011 Acta Phys. Sin. 60 036801 (in Chinese) [邱云飞, 杜文汉, 王兵 2011 物理学报 60 036801]
[25] Fano U 1961 Phys. Rev. 124 1866
[26] Madhavan V, Chen W, Jamneala T, Crommie M F, Wingreen N S 2001 Phys. Rev. B 64 165412
[27] Bork J, Zhang Y-h, Diekhöner L, Borda L, Simon P, Kroha J, PeterWahl, Kern K 2011 Nat. Phys. 7 901
[28] Weissmann M, Saul A, Llois A M, Guevara J 1999 Phys. Rev. B 59 8405
[29] Lang N D 1987 Phys. Rev. Lett. 58 45
[30] Hewson A C 1993 The Kondo problem to heavy fermions (Cambridge: Cambridge University Press)
[31] Goldhaber-Gordon D, Göres J, Kastner M A, Shtrikman H, Mahalu D, Meirav U 1998 Phys. Rev. Lett. 81 5225
[32] Bulka B R, Stefan'ski P 2001 Phys. Rev. Lett. 86 5128
[33] Costi T A, Hewson A C, Zlatic V 1994 J. Phys.: Condens. Matter 6 2519
[34] Jamneala T, Madhavan V, Chen W, Crommie M F 2000 Phys. Rev. B 61 9990
[35] Alexander S, Anderson P W 1964 Phys. Rev. 133 1594
[36] Oswald A, Zeller R, Braspenning P J, Dederichs P H 1985 J. Phys. F 15 193
[37] Jayaprakash C, Krishna-murthy H R, Wilkins J W 1981 Phys. Rev. Lett. 47 737
[38] Savkin V V, Rubtsov A N, Katsnelson M I, Lichtenstein A I 2005 Phys. Rev. Lett. 94 026402
-
[1] Jiang Y H, Liu L W, Yang K, Xiao W D, Gao H J 2011 Chin. Phys. B 20 096401
[2] Zhao M H, Sun J J, Wang D, Zou Z Q, Liang Q 2010 Acta Phys. Sin. 59 636 (in Chinese) [赵明海, 孙静静, 王丹, 邹志强, 梁齐 2010 物理学报 59 636]
[3] Zhang H G, Mao J H, Liu Q, Jiang N, Zhou H T, Guo H M, Shi D X, Gao H J 2010 Chin. Phys. B 19 018105
[4] Xu M J, Mayandi J, Wang X S, Jia J F, Xue Q K, Dou X M 2010 Chin. Phys. B 19 106102
[5] Dou W D, Zhang H J, Bao S N 2010 Chin. Phys. B 19 026803
[6] Madhavan V, Chen W, Jamneala T, Crommie M F, Wingreen N S 1998 Science 280 567
[7] Manoharan H C, Lutz C P, Eigler D M 2000 Nature 403 512
[8] Knorr N, Schneider M A, Diekhoner L, Wahl P, Kern K 2002 Phys. Rev. Lett. 88 096804
[9] Nagaoka K, Jamneala T, Grobis M, Crommie M F 2002 Phys. Rev. Lett. 88 077205
[10] Schneider M A, Vitali L, Knorr N, Kern K 2002 Phys. Rev. B 65 121406
[11] Wahl P, Diekhoner L, Schneider M A, Vitali L, Wittich G, Kern K 2004 Phys. Rev. Lett. 93 176603
[12] Otte A F, Ternes M, von Bergmann K, Loth S, Brune H, Lutz C P, Hirjibehedin C F, Heinrich A J 2008 Nature Physics 4 847
[13] Hirjibehedin C F, Lin C Y, Otte A F, Ternes M, Lutz C P, Jones B A, Heinrich A J 2007 Science 317 1199
[14] Balashov T, Schuh T, Takács A F, Ernst A, Ostanin S, Henk J, Mertig I, Bruno P, Miyamachi T, Suga S, Wulfhekel W 2009 Phys. Rev. Lett. 102 257203
[15] Chen W, Jamneala T, Madhavan V, Crommie M F 1999 Phys. Rev. B 60 R8529
[16] Jamneala T, Madhavan V, Crommie M F 2001 Phys. Rev. Lett. 87 256804
[17] Wahl P, Simon P, Diekhöner L, Stepanyuk V S, Bruno P, Schneider M A, Kern K 2007 Phys. Rev. Lett. 98 056601
[18] Neel N, Kroger J, Berndt R, Wehling T O, Lichtenstein A I, Katsnelson M I 2008 Phys. Rev. Lett. 101 266803
[19] Gambardella P, Rusponi S, Veronese M, Dhesi S S, Grazioli C, Dallmeyer A, Cabria I, Zeller R, Dederichs P H, Kern K, Carbone C, Brune H 2003 Science 300 1130
[20] Etz C, Zabloudil J, Weinberger P, Vedmedenko E Y 2008 Phys. Rev. B 77 184425
[21] Blonski P, Lehnert A, Dennler S, Rusponi S, Etzkorn M, Moulas G, Bencok P, Gambardella P, Brune H, Hafner J 2010 Phys. Rev. B 81 104426
[22] Feng W, Feng X Y, Zhao A D, Li B, Wang B, Hou J G, Yang J L unpublished results
[23] Liu K, Wang B 2011 Acta Phys. Sin. 60 046801 (in Chinese) [刘锴, 王兵 2011 物理学报 60 046801]
[24] Qiu Y F, Du W H, Wang B 2011 Acta Phys. Sin. 60 036801 (in Chinese) [邱云飞, 杜文汉, 王兵 2011 物理学报 60 036801]
[25] Fano U 1961 Phys. Rev. 124 1866
[26] Madhavan V, Chen W, Jamneala T, Crommie M F, Wingreen N S 2001 Phys. Rev. B 64 165412
[27] Bork J, Zhang Y-h, Diekhöner L, Borda L, Simon P, Kroha J, PeterWahl, Kern K 2011 Nat. Phys. 7 901
[28] Weissmann M, Saul A, Llois A M, Guevara J 1999 Phys. Rev. B 59 8405
[29] Lang N D 1987 Phys. Rev. Lett. 58 45
[30] Hewson A C 1993 The Kondo problem to heavy fermions (Cambridge: Cambridge University Press)
[31] Goldhaber-Gordon D, Göres J, Kastner M A, Shtrikman H, Mahalu D, Meirav U 1998 Phys. Rev. Lett. 81 5225
[32] Bulka B R, Stefan'ski P 2001 Phys. Rev. Lett. 86 5128
[33] Costi T A, Hewson A C, Zlatic V 1994 J. Phys.: Condens. Matter 6 2519
[34] Jamneala T, Madhavan V, Chen W, Crommie M F 2000 Phys. Rev. B 61 9990
[35] Alexander S, Anderson P W 1964 Phys. Rev. 133 1594
[36] Oswald A, Zeller R, Braspenning P J, Dederichs P H 1985 J. Phys. F 15 193
[37] Jayaprakash C, Krishna-murthy H R, Wilkins J W 1981 Phys. Rev. Lett. 47 737
[38] Savkin V V, Rubtsov A N, Katsnelson M I, Lichtenstein A I 2005 Phys. Rev. Lett. 94 026402
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