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arXiv quant-ph/9709038quant-ph
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外场中大自旋的Berry相

Berry's phase for large spins in external fields

V. A. Kalatsky, E. Müller--Hartmann, V. L. Pokrovsky, G. S. Uhrig

摘要:

它表明,即使是大自旋$J$之间的整数和半整数自旋的根本区别仍然存在。在一个准经典的描述中,这种差异是通过贝里联系进入的。这种普遍现象是由晶体电场限制在一个平面上的大自旋推导和说明。物理实现是稀土镍硼碳化物。计算了半整数自旋的磁矩(Dy $^{3+}$,$J=15/2$)和整数自旋的磁化率(Ho $^{3+}$,$J=8$)。实验提出的预测的根本差异提供证据。

英文摘要:

It is shown that even for large spins $J$ the fundamental difference between integer and half-integer spins persists. In a quasi-classical description this difference enters via Berry's connection. This general phenomenon is derived and illustrated for large spins confined to a plane by crystalline electric fields. Physical realizations are rare-earth Nickel Borocarbides. Magnetic moments for half-integer spin (Dy$^{3+}$, $J=15/2$) and magnetic susceptibilities for integer spin (Ho$^{3+}$, $J=8$) are calculated. Experiments are proposed to furnish evidence for the predicted fundamental difference.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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