Macrospin tunneling and magnetopolaritons with nanomechanical interference.
Macrospin tunneling and magnetopolaritons with nanomechanical interference.
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DOI：
10.1103/physrevlett.106.147203
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发表时间：
2010-11
影响因子：
8.6
通讯作者：
A. Kovalev;L. X. Hayden;G. Bauer;Y. Tserkovnyak
中科院分区：
文献类型：
--
作者：
A. Kovalev;L. X. Hayden;G. Bauer;Y. Tserkovnyak
我们用瞬子和微扰两种方法从理论上研究了纳米机械谐振器与磁性纳米粒子宏观自旋耦合的量子动力学。我们演示了通过纳米机械干扰来抑制相反磁化强度之间的隧道效应和磁极化子(相干磁机械振荡)的破坏。这些预测可以通过连接到纳米机械桥上的分子磁体来实验验证。
We theoretically address the quantum dynamics of a nanomechanical resonator coupled to the macrospin of a magnetic nanoparticle by both instanton and perturbative approaches. We demonstrate suppression of the tunneling between opposite magnetizations and destruction of magnetopolaritons (coherent magnetomechanical oscillations) by nanomechanical interference. The predictions can be verified experimentally by a molecular magnet attached to a nanomechanical bridge.