Nesting-driven multipolar order in CeB6 from photoemission tomography
Nesting-driven multipolar order in CeB6 from photoemission tomography
复制标题
光电发射断层扫描在 CeB6 中嵌套驱动的多极有序
DOI:
10.1038/ncomms10876
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发表时间:
2016
影响因子:
16.6
通讯作者:
D.S. Inosov
中科院分区:
文献类型:
--
作者:
A. Koitzsch;N. Heming;M. Knupfer;B. Büchner;P. Y. Portnichenko;A.V. Dukhnenko;N.Y. Shitsevalova;V.B. Filipov;L.L. Lev;V.N. Strocov;J. Ollivier;D.S. Inosov
Some heavy fermion materials show so-called hidden-order phases which are invisible to many characterization techniques and whose microscopic origin remained controversial for decades. Among such hidden-order compounds, CeB6is of model character due to its simple electronic configuration and crystal structure. Apart from more conventional antiferromagnetism, it shows an elusive phase at low temperatures, which is commonly associated with multipolar order. Here we show that this phase roots in a Fermi surface instability. This conclusion is based on a full 3D tomographic sampling of the electronic structure by angle-resolved photoemission and comparison with inelastic neutron scattering data. The hidden order is mediated by itinerant electrons. Our measurements will serve as a paradigm for the investigation of hidden-order phases inf-electron systems, but also generally for situations where the itinerant electrons drive orbital or spin order.
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