Spectroscopic determination of crystal-field levels in CeRh2Si2 and CeRu2Si2 and of the 4f0 contributions in CeM2Si2 (M=Cu, Ru, Rh, Pd, and Au)

Spectroscopic determination of crystal-field levels in CeRh2Si2 and CeRu2Si2 and of the 4f0 contributions in CeM2Si2 (M=Cu, Ru, Rh, Pd, and Au)
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光谱测定 CeRh2Si2 和 CeRu2Si2 中的晶体场水平以及 CeM2Si2 中的 4f0 贡献(M=Cu、Ru、Rh、Pd 和 Au)

DOI:
10.1103/physrevb.85.035117
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
L. H. Tjeng
L. H. Tjeng
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
T. Willers;D.T. Adroja;B.D. Rainford;N. Hollmann;P. O. Körner;Y.-Y. Chin;D. Schmitz;H. H. Hsieh;H.-J. Lin;C. T. Chen;E.D. Bauer;J.L.Sarrao;K.J. McClellan;D. Byler;C. Geibel;F. Steglich;H. Aoki;P. Lejay;A. Tanaka;L. H. Tjeng

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我们利用线性偏振软 X 射线吸收光谱 (XAS) 和非弹性中子散射确定了 CeRhSi 和 CeRuSi 的基态波函数和晶体场能级方案。我们发现大的晶体场分裂和基态波函数主要由这两种化合物中的一定量组成。 CeSi 家族的几个成员(Cu、Ru、Rh、Pd 和 Au)对基态的贡献已通过 XAS 测定,比较揭示了电子离域的趋势。 Yano 等人通过 CeRuSi 上的硬 X 射线光电子能谱结果缩放来提取绝对数。修订版 B 77, 035118 (2008)PRBMDO1098-012110.1103/PhysRevB.77.035118]。
We have determined the ground-state wave functions and crystal-field-level schemes of CeRhSiand CeRuSiusing linear polarized soft x-ray-absorption spectroscopy (XAS) and inelastic neutron scattering. We find large crystal-field splittings and ground-state wave functions which are made of mainly=with some amount ofin both the compounds. Thecontribution to the ground state of several members of the CeSifamily withCu, Ru, Rh, Pd, and Au) has been determined with XAS, and the comparison reveals a trend concerning the delocalization of theelectrons. Absolute numbers are extracted from scaling to results from hard x-ray photoelectron spectroscopy on CeRuSiby Yanoet al.[Phys. Rev. B 77, 035118 (2008)PRBMDO1098-012110.1103/PhysRevB.77.035118].