Quantum projection in an Ising spin liquid.
Quantum projection in an Ising spin liquid.
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伊辛自旋液体中的量子投影。
DOI：
10.1103/physrevlett.99.057203
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发表时间：
2007
影响因子：
8.6
通讯作者：
Silevitch DM
中科院分区：
文献类型：
--
作者：
Silevitch DM
利用横向磁场扫描单轴量子磁体的对角和非对角磁化率。强耦合自旋的集群作为响应函数的主要来源，这是由场诱导的量子投影系统到经典禁止（意味着非伊辛）制度。基于自旋对的计算只再现了数据的一些特征，并且无法预测测量到的非对角响应，这提供了多自旋集体状态的证据。
A transverse magnetic field is used to scan the diagonal and off-diagonal susceptibility of the uniaxial quantum magnet,. Clusters of strongly coupled spins act as the primary source for the response functions, which result from a field-induced quantum projection of the system into a classically forbidden (meaning non-Ising) regime. Calculations based on spin pairs reproduce only some features of the data and fail to predict the measured off-diagonal response, providing evidence of a multispin collective state.