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Theoretical Studies on Quantum Tunneling of Spins in Cluster of Clusters

 

作者: Yasuteru Shigeta,   Hidemi Nagao,   Yasunori Yoshioka,   Kizashi Yamaguchi,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 2000）
卷期: Volume 342, issue 1  

页码: 279-284

 

ISSN:1058-725X

 

年代: 2000

 

DOI:10.1080/10587250008038278

 

出版商: Taylor & Francis Group

 

关键词: quantum tunneling of magnetization;wavepacket dynamics;cluster of clusters

 

数据来源: Taylor

 

摘要:

In this work, we consider a cluster, which consists of small clusters with an anisotropy energy and suppose that the Hamiltonian of each cluster in the cluster is represented by the nonlinear sigma model. We apply a single spin model to the model clusters and calculate the time evolution of spin wavepacket. We demonstrate a magnetic field induced tunneling and elucidate its mechanism.

 

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