On-chip SQUID measurements in the presence of high magnetic fields
On-chip SQUID measurements in the presence of high magnetic fields
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DOI：
10.1088/0957-4484/21/40/405504
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发表时间：
2010-07
期刊：
影响因子：
3.5
通讯作者：
Lei Chen;W. Wernsdorfer;C. Lampropoulos;G. Christou;I. Chiorescu
中科院分区：
文献类型：
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作者：
Lei Chen;W. Wernsdorfer;C. Lampropoulos;G. Christou;I. Chiorescu
我们通过实施片上 SQUID 技术报告了低温测量技术和量子分子自旋的磁化数据。该技术可在高达 7 T 的高磁场中实现 SQUID 磁力测量。详细介绍了主要挑战和校准过程。该测量协议用于观察 S = 10 分子磁体 Mn12–tBuAc 的量子隧道跃迁。还讨论了横向场对该分子系统隧道分裂的影响。
We report a low temperature measurement technique and the magnetization data of a quantum molecular spin, by implementing an on-chip SQUID technique. This technique enables SQUID magnetometry in high magnetic fields, up to 7 T. The main challenges and the calibration process are detailed. The measurement protocol is used to observe quantum tunneling jumps of the S = 10 molecular magnet, Mn12–tBuAc. The effect of a transverse field on the tunneling splitting for this molecular system is addressed as well.