磁爆燃理论

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摘要翻译：
发展了分子磁体晶体中的磁爆燃（雪崩）理论。这种现象类似于化学物质的燃烧，塞曼能起化学能的作用。磁性爆燃的非破坏可逆特性，以及通过改变磁场可以连续调节晶体的可燃性，使分子磁体成为详细研究燃烧过程的一个有吸引力的玩具系统。与化学燃烧相比，除了简单外，它还具有亚稳态自旋态的量子衰变和热容和导热系数的强温度依赖性。得到了磁爆燃着火判据的解析解和数值解，并计算了磁爆燃着火速率和发展爆燃前沿的速度。
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英文标题：
《Theory of magnetic deflagration》
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作者：
D. A. Garanin and E. M. Chudnovsky
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最新提交年份：
2007
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分类信息：

一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics        物理学
二级分类：Materials Science        材料科学
分类描述：Techniques, synthesis, characterization, structure.  Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术，合成，表征，结构。结构相变，力学性质，声子。缺陷，吸附质，界面
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英文摘要：
  Theory of magnetic deflagration (avalanches) in crystals of molecular magnets has been developed. The phenomenon resembles the burning of a chemical substance, with the Zeeman energy playing the role of the chemical energy. Non-destructive reversible character of magnetic deflagration, as well as the possibility to continuously tune the flammability of the crystal by changing the magnetic field, makes molecular magnets an attractive toy system for a detailed study of the burning process. Besides simplicity, new features, as compared to the chemical burning, include possibility of quantum decay of metastable spin states and strong temperature dependence of the heat capacity and thermal conductivity. We obtain analytical and numerical solutions for criteria of the ignition of magnetic deflagration, and compute the ignition rate and the speed of the developed deflagration front.
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PDF链接：
https://arxiv.org/pdf/704.3751

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关键词：Transitions Possibility equilibrium Statistical Destructive possibility developed 化学 成为 着火