磁性纳米分子和纳米团簇的相干自旋辐射
Coherent spin radiation by magnetic nanomolecules and nanoclusters
摘要：
利用数值模拟方法研究了磁性纳米分子相干自旋辐射的特性。的考虑是基于一个微观的哈密顿考虑到现实的偶极相互作用。只有当分子样品耦合到谐振电路时才能实现超辐射。反馈机制允许实现快速的自旋反转时间和大的辐射强度。分析了样品形状和取向对辐射水平的影响。最强大的相干辐射被发现发生沿谐振器磁场定向的细长样品。
英文摘要：
The peculiarities of coherent spin radiation by magnetic nanomolecules is investigated by means of numerical simulation. The consideration is based on a microscopic Hamiltonian taking into account realistic dipole interactions. Superradiance can be realized only when the molecular sample is coupled to a resonant electric circuit. The feedback mechanism allows for the achievement of a fast spin reversal time and large radiation intensity. The influence on the level of radiation, caused by sample shape and orientation, is analysed. The most powerful coherent radiation is found to occur for an elongated sample directed along the resonator magnetic field.
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