Two-stage multipolar ordering in PrT2Al20 Kondo materials

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Among heavy fermion materials, there is a set of rare-earth intermetallics with non-Kramers Pr3+ 4 integral(2) moments which exhibit a rich phase diagram with intertwined quadrupolar orders, superconductivity, and non-Fermi liquid behavior. However, more subtle broken symmetries such as multipolar orders in these Kondo materials remain poorly studied. Here, we argue that multi-spin interactions between local moments beyond the conventional two-spin exchange must play an important role in Kondo materials near the ordered to heavy Fermi liquid transition. We show that this drives a plethora of phases with coexisting multipolar orders and multiple thermal phase transitions, providing a natural framework for interpreting experiments on the Pr(T)(2)Al-20. class of compounds.
Publisher
AMER PHYSICAL SOC
Issue Date
2018-03
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW B, v.97, no.11, pp.115111

ISSN
2469-9950
DOI
10.1103/PhysRevB.97.115111
URI
http://hdl.handle.net/10203/241093
Appears in Collection
PH-Journal Papers(저널논문)
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