Photoinduced phase transition accelerated by use of two-component nanostructures: A computational study on an Ising-type model

Photoinduced phase transition accelerated by use of two-component nanostructures: A computational study on an Ising-type model
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使用双组分纳米结构加速光致相变:伊辛型模型的计算研究

DOI:
10.1103/physrevb.68.235112
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发表时间:
2003
期刊:
影响因子:
3.7
通讯作者:
S. Abe
S. Abe
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
T. Kawamoto;S. Abe

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我们提出了一种加速光致相变的方法,并结合伊辛型模型的Monte Carlo模拟对该方法进行了清晰的演示。该方法涉及构建一个混合物的两个组成部分的组成单位,具有相反的相对稳定性之间的双态。作为一个简单的模型,伊辛型模型的两个组件的Monte Carlo模拟进行了研究。相反的相对稳定性在每个单元的两个状态之间的能量差中实现。在混合物中,在连续激发下的相变进行得比在单组分均匀结构中更快。这是由于相对接近局部不稳定性的组成单元中的最终相的加速成核。
We propose a method of accelerating photoinduced phase transition in conjunction with a clear-cut demonstration of the method using Monte Carlo simulations for an Ising-type model. The method involves constructing a mixture of two-component constituent units that have an opposite relative stability between their bistable states. As a simple model, an Ising-type model of two components is investigated by means of Monte Carlo simulations. The opposite relative stabilities are implemented in the energy difference between the two states of each unit. In the mixture, the phase transition proceeds under continuous excitation more rapidly than in a single-component homogeneous structure. This is due to an accelerated nucleation of the final phase in the constituent unit that is relatively close to local instability.
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