Ab initio molecular dynamics simulations of femtosecond-laser-induced anti-Peierls transition in antimony

Ab initio molecular dynamics simulations of femtosecond-laser-induced anti-Peierls transition in antimony
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飞秒激光诱导反 Peierls 转变为锑的从头算分子动力学模拟

DOI:
10.1117/12.2214668
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
M. E. Garcia
M. E. Garcia
中科院分区:
--
文献类型:
--
作者:
E. S. Zijlstra;T. Zier;B. Bauerhenne;S. Krylow;M. E. Garcia

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锑是一种有趣的单质晶体,因为在基态时,它被佩尔斯畸变稳定下来。在这里,我们使用N = 864原子和周期边界条件的模拟箱,在飞秒激光激发前后对这种有趣的材料进行密度-功能理论分子动力学模拟,其中原子在Γ-point近似中处理,电子在8 k点上积分。在谐波近似中适当初始化原子后,我们在20皮秒内使系统热化。然后通过瞬间将电子温度提高到8000开尔文来模拟强烈的飞秒激光激发。我们的结果显示了激光诱导的反佩尔跃迁。
Antimony is an interesting elemental crystal because, in its ground state, it is stabilized by a Peierls distortion. Here we perform density-functional-theory molecular dynamics simulations of this intriguing material before and after femtosecond-laser excitation using a simulation box with N = 864 atoms and periodic boundary conditions, where the atoms are treated in the Γ-point approximation and the electrons are integrated over 8 k points. After an appropriate initialization of the atoms in the harmonic approximation we thermalize our system during 20 picoseconds. Then an intense femtosecond-laser excitation is simulated by instantaneously raising the electronic temperature to 8000 Kelvin. Our results show a laser-induced anti-Peierls transition.
DOI: --
发表时间: 1971
期刊:
影响因子: --
作者:
R. Sharp;E. Warming
通讯作者: E. Warming
锑中的声子色散关系
DOI: --
发表时间: 1971
期刊:
影响因子: --
作者:
J. Sosnowski;E. Maliszewski;S. Bednarski;A. Czachor
通讯作者: A. Czachor
DOI: 10.1103/physrevlett.87.237401
发表时间: 2001-12-03
影响因子: 8.6
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DOI: 10.1088/0965-0393/17/1/015009
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影响因子: 1.8
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通讯作者: U. von Barth
DOI: 10.1021/nl4044828
发表时间: 2014-03-01
期刊: NANO LETTERS
影响因子: 10.8
作者:
Appavoo, Kannatassen;Wang, Bin;Haglund, Richard F., Jr.
通讯作者: Haglund, Richard F., Jr.