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利用Monte Carlo (MC)模拟技术研究了非均一的吸附原子与基底相互作用能在一定的生长条件下对超薄膜生长过程的影响.非均一相互作用能是由基底表面原子在垂直和水平方向上实际位置与理想晶格原子位置的偏差所造成.本文用高斯分布来表示这种非均一相互作用能.模拟结果表明:非均一相互作用能对超薄膜的生长过程及薄膜的形貌有显著的影响.这种影响同时受到生长条件的限制,在中等温度时相互作用能的非均一性对岛的个数、平均大小的影响最显著;温度的增加在一定程度上可抵御相互作用能的非均一性对薄膜生长的影响.
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关键词:
- 薄膜生长 /
- Monte Carlo 模拟 /
- 相互作用能
The influence of inhomogeneous interaction energy between deposited atoms and substrate atoms on island film growth is investigated by Monte Carlo simulation on a triangular lattice substrate. The Gaussian distribution is employed to describe the inhomogeneity of interaction energy. The results illustrate that the influence of inhomogeneous interaction energy on the growth of thin film is related to the degree of the inhomogeneity and the experimental conditions (such as substrate temperature).At medium temperature the inhomogeneity of interaction energy has notable influence on the island number and the island size. Increasing in temperature could counteract the influence of the inhomogeneity of interaction energy.-
Keywords:
- thin film growth /
- Monte Carlo simulation /
- interaction energy
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[7] Qian C J, Li H, Zhong R, Luo M B, Ye G X 2009 Chin. Phys. B 18 1947
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[15] Elsholz F, Scholl E 2004 App. Phys. Lett. 84 4167
[16] Huang K, Han R Q 1988 Solid Physics (Beijing: Higher Education Press) p3 (in Chinese) [黄 昆、韩汝琦 1988 固体物理学 (北京: 高等教育出版社) 第3页]
[17] Madelung O 2003 Introuduction to Solid-State theory (Beijing: Beijing World Publishing Corporation) p436
[18] Cascarini de Torre L E, Bottani E J 1996 Colloids and Surfaces A: Physicochemical and Engineering Aspects 116 285
[19] Rder H, Hahn E, Brune H 1993 Nature 366 141
[20] Michely T, Hohage M, Bott M 1993 Phys. Rev. Lett. 70 3943
[21] Brune H, Roder H, Boragno C 1994 Phys. Rev. Lett. 73 1955
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[1] Wang E G 2003 Prog. Phys. 23 1 (in Chinese) [王恩哥 2003 物理学进展 23 1 ]
[2] Bruschi P, Cagroni P,Nannini A 1997 Phys. Rev B 55 7955
[3] Liu Z L, Wei H L, Wang H W, Wang J Z 1999 Acta Phys. Sin. 48 1302 (in Chinese) [刘祖黎、 魏合林、 王汉文、 王均震 1999 48 1302 ]
[4] Wei H L,Liu Z L, Yao K L 2000 Vacuum 56 185
[5] Nazzarro M, Nieto F, Ramirez-Pastor A J 2002 Surface Science 497 275
[6] Lu H J, Wu F M 2006 Acta Phys. Sin. 55 424 (in Chinese)[陆行军、吴锋民 2006 55 424]
[7] Qian C J, Li H, Zhong R, Luo M B, Ye G X 2009 Chin. Phys. B 18 1947
[8] Ala-Nissila T, Ferrando R. Ying S C. 2002 Advances in Physics 51 949
[9] Wang X P, Zhao T X, Wu F M, Lin G, Wu Z Q 1999 Acta Phys. Sin. 48 1412 (in Chinese)[王晓平、 赵特秀、 吴锋民、 林 罡、吴自勤 1999 48 1412 ]
[10] Zhang Q Y, Ma T C, Pan Z Y, Tang J Y 2000 Acta Phys. Sin. 49 297 (in Chinese)[张庆瑜、 马腾才、 潘正瑛、 汤家镛 2000 49 297 ]
[11] Wu F M, Shi J Q, Wu Z Q 2001 Acta Phys. Sin. 50 1555 (in Chinese) [吴锋民、 施建青、 吴自勤 2001 50 1555]
[12] Ye J S, Hu X J 2002 Acta Phys. Sin. 51 1108 (in Chinese) [叶建松、 胡晓君 2002 51 1108]
[13] Zheng X P, Zhang P F, Liu J, He D Y, Ma J T 2004 Acta Phys. Sin. 53 2687 (in Chinese) [郑小平、 张佩峰、 刘 军、 贺德衍、 马健泰 2004 53 2687]
[14] Gao G L, Qian C J, Zhong R, Luo M B, Ye G X 2006 Acta Phys. Sin. 55 4460 (in Chinese) [高国良、 钱昌吉、 钟 瑞、 罗孟波、 叶高翔 2006 55 4460 ]
[15] Elsholz F, Scholl E 2004 App. Phys. Lett. 84 4167
[16] Huang K, Han R Q 1988 Solid Physics (Beijing: Higher Education Press) p3 (in Chinese) [黄 昆、韩汝琦 1988 固体物理学 (北京: 高等教育出版社) 第3页]
[17] Madelung O 2003 Introuduction to Solid-State theory (Beijing: Beijing World Publishing Corporation) p436
[18] Cascarini de Torre L E, Bottani E J 1996 Colloids and Surfaces A: Physicochemical and Engineering Aspects 116 285
[19] Rder H, Hahn E, Brune H 1993 Nature 366 141
[20] Michely T, Hohage M, Bott M 1993 Phys. Rev. Lett. 70 3943
[21] Brune H, Roder H, Boragno C 1994 Phys. Rev. Lett. 73 1955
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