Magnetic field induced orbital polarization in cubic YbInNi4: determining the quartet ground state using x-ray linear dichroism.
Magnetic field induced orbital polarization in cubic YbInNi4: determining the quartet ground state using x-ray linear dichroism.
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立方体 YbInNi4 中的磁场诱导轨道极化：使用 X 射线线性二向色性确定四重基态
DOI：
10.1103/physrevlett.107.236402
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发表时间：
2011
影响因子：
8.6
通讯作者：
A. Severing
中科院分区：
文献类型：
--
作者：
T. Willers;J.C. Cezar;N.B. Brookes;F. Strigari;P. Körner;N. Hollmann;D. Schmitz;A. Bianchi;Z. Fisk;A. Tanaka;L. H. Tjeng;A. Severing
在磁场的作用下，我们已经能够在立方的ybx射线吸收白线上诱导出一个线性二向色信号。磁场诱导二向色谱的非零积分强度表明净非三轨道极化。通过对温度和场强依赖性的定量分析，确定了晶体场基态为四重态。结果表明，磁场诱导线性二色性是研究立方重费米子和近田系简并性和轨道自由度的一种强有力的新方法。
We have been able to induce a linear dichroic signal in the Ybx-ray absorption white line of cubicby the application of a magnetic field. The nonzero integrated intensity of the magnetic field induced dichroic spectrum indicates a net noncubicorbital polarization. A quantitative analysis of the temperature and field strength dependence establishes that the crystal-field ground state is aquartet. The results demonstrate the potential of magnetic field induced linear dichroism as a new powerful approach for the investigation of the degeneracy and orbital degrees of freedom of cubic heavy-fermion and Kondo systems.