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arXiv 0806.4105quant-ph
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Fe8磁性团簇的有限维离散相空间方法:用Wigner和Husimi函数表征隧穿效应

A discrete finite-dimensional phase space approach for Fe8 magnetic clusters: characterizing tunneling efects via Wigner and Husimi functions

Evandro C. Silva, Diogenes Galetti

摘要:

本文采用离散量子相空间方法,借助于Wigner函数和Husimi分布讨论了Fe_8磁性团簇中自旋隧穿的一些基本问题。这些功能获得的锐角状态和对称组合的最低能量的双重与应用程序的外部磁场。这些功能的时间演化进行数值允许一个提取有价值的信息的动态状态下考虑,特别是相干振荡与自旋隧道。它还表明,熵功能的离散Husimi分布函数的构造允许表征自旋隧道。

英文摘要:

Discrete quantum phase space formalism is used to discuss some basic aspects of the spin tunneling occurring in Fe8 magnetic cluster by means of Wigner functions as well as Husimi distributions. Those functions were obtained for sharp angle states and symmetric combinations of the lowest energy doublet with the application of an external magnetic field. The time evolution of those functions carried out numerically allows one to extract valuable information about the dynamics of the states under consideration, in particular, the coherent oscillations associated with the spin tunneling. It is also shown that an entropy functional constructed out of the discrete Husimi distribution function allows to characterize the spin tunneling.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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