| 一维 Frenkel-Kontorova(FK)模型原子链的相变研究 |
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| 引用本文： | 韩秀琴,姜虹,石玉仁,刘妍秀,孙建华,陈建敏,段文山.一维 Frenkel-Kontorova(FK)模型原子链的相变研究[J].物理学报,2011,60(11):116801-116801. |
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| 作者姓名： | 韩秀琴 姜虹 石玉仁 刘妍秀 孙建华 陈建敏 段文山 |
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| 作者单位： | 1. 西北师范大学物理与电子工程学院,兰州 730070;
2. 固体润滑国家重点实验室,中国科学院兰州化学物理研究所,兰州 730000 |
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| 基金项目： | 国家自然科学基金(批准号:10875098)和西北师范大学科技创新工程基金(批准号:NWNU-KJCXGC-03-48)资助的课题. |
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| 摘 要： | 文章基于一维Frenkel-Kontorova模型,研究了边界原子的初始速度对原子链运动状态的影响,数值模拟结果表明:当v1时,原子处于"振荡区",当v12时,原子处于"混沌区",当v>v2时,原子处于 "均匀区". 同时我们发现临界速度v1和v2随原子数目和垫底势高度的变化而变化.
关键词：
Frenkel-Kontorova(FK)模型
相变
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| 关 键 词： | Frenkel-Kontorova(FK)模型 相变 |
| 收稿时间： | 2010-10-29 |
| 修稿时间： | 3/4/2011 12:00:00 AM |
Phase transition of atomic chain in the one-dimensional Frenkel-Kontorova model |
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| Han Xiu-Qin,Jiang Hong,Shi Yu-Ren,Liu Yan-Xiu,Sun Jian-Hu,Chen Jian-Min and Duan Wen.Phase transition of atomic chain in the one-dimensional Frenkel-Kontorova model[J].Acta Physica Sinica,2011,60(11):116801-116801. |
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| Authors: | Han Xiu-Qin Jiang Hong Shi Yu-Ren Liu Yan-Xiu Sun Jian-Hu Chen Jian-Min and Duan Wen |
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| Institution: | College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China;College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China |
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| Abstract: | The effect of the initial velocity of boundary atom on the motion of an atomic chain is studied by the one-dimensional Frenkel-Kontorova model. The obatined results show that the three phases could be observed in our simulation, these being harmonic phase when v<v1, choatic phase when v1<v<v2 and uniformity phase when v>v2. It is aslo shown that the two critical velocites(v1,v2) are strongly influenced by the number of atoms and the depth of the substrate potential. |
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| Keywords: | Frenkel-Kontorova model phase transitions |
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