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Effect of anharmonicity on Kapitza resistance

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Abstract

To understand the effect of anharmonicity on the Kapitza resistance, a one-dimensional model is used to simulate the system of “heavy” element-“light” element solids. The system is coupled to high- and low-temperature sources, respectively, at its end points. The Lennard-Jones potential is used as the interaction potential in the “light” solid. For various parameters in the potential, the Kapitza resistance is calculated. It is found that the stronger the anharmonicity in the light side, the smaller is the Kapitza resistance. Also, the cases that only one to four pairs of light atoms with anharmonic interaction across the boundary is considered. With the number of “anharmonic” pairs across the interface increasing, the Kapitza resistance is found to be decreasing.

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References

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Author notes

  1. Yuzhen Ge

    Present address: Department of Mathematics, Virginia Tech, 24061, Virginia

Authors and Affiliations

  1. Institute of Physics, Academia Sinica, Beijing, People's Republic of China

    Yuzhen Ge, Shigang Chen & Weiyan Kuan

Authors
  1. Yuzhen Ge
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  2. Shigang Chen
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  3. Weiyan Kuan
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Ge, Y., Chen, S. & Kuan, W. Effect of anharmonicity on Kapitza resistance. J Low Temp Phys 75, 59–64 (1989). https://doi.org/10.1007/BF00688744

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  • DOI: https://doi.org/10.1007/BF00688744

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