Field-Angle-Resolved Magnetic Excitations as a Probe of Hidden-Order Symmetry in CeB6

  title={Field-Angle-Resolved Magnetic Excitations as a Probe of Hidden-Order Symmetry in 
  author={Pavlo Y. Portnichenko and Alireza Akbari and S E Nikitin and Alistair S. Cameron and Anatoliy V. Dukhnenko and V Filipov and Natalya Y Shitsevalova and Petr {\vC}erm{\'a}k and I. Radelytskyi and Astrid Schneidewind and Jacques Ollivier and Andrey A. Podlesnyak and Zita Huesges and J. Xu and Alexandre S. Ivanov and Yvan Sidis and Sylvain Petit and J-M Mignot and Peter Thalmeier and Dmytro S. Inosov},
  journal={Physical Review X},
In contrast to magnetic order formed by electrons' dipolar moments, ordering phenomena associated with higher-order multipoles (quadrupoles, octupoles, etc.) are more difficult to characterize because of the limited choice of experimental probes that can distinguish different multipolar moments. The heavy-fermion compound CeB6 and its La-diluted alloys are among the best-studied realizations of the long-range-ordered multipolar phases, often referred to as "hidden order". Previously the hidden… 

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Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 under magnetic field

Hidden-order phases that occur in a number of correlated f-electron systems are among the most elusive states of electronic matter. Their investigations are hindered by the insensitivity of standard

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Inelastic neutron-scattering data reveal that the intensity of this FM excitation significantly exceeds that of conventional spin-wave magnons emanating from the AFM wavevectors, thus placing CeB6 much closer to a FM instability than previously anticipated.

Intertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO4

It is shown that TmMgGaO4 has multipolar order that can be inferred by inelastic neutron scattering and modeled by transverse field Ising model, and it is demonstrated that the observed unusual spin correlations and thermodynamics can be accurately described by a transverseField Ising models on the triangular lattice with an intertwined dipolar and ferro-multipolar order.

"Hidden order" and its quantum excitations in the triangular-lattice magnet TmMgGaO$_4$

A phase transition is often accompanied by the appearance of an order parameter and symmetry breaking. Certain magnetic materials exhibit exotic hidden-order phases, in which the order parameters are

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Incommensurate short-range multipolar order parameter of phase II in Ce 3 Pd 20 Si 6

The clathrate compound Ce3Pd20Si6 is a heavy-fermion metal that exhibits magnetically hidden order at low temperatures. Reputedly, this exotic type of magnetic ground state, known as "phase II",

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In this paper we review experimental and theoretical results on higher electronic multipoles in solids with strong correlations. Recent experiments and their theoretical interpretation have confirmed

Magnetic field dependence of the neutron spin resonance in CeB 6

In zero magnetic field, the famous neutron spin resonance in the f-electron superconductor CeCoIn5 is similar to the recently discovered exciton peak in the non-superconducting CeB6. Magnetic field

Resonant magnetic exciton mode in the heavy-fermion antiferromagnet CeB₆.

An unexpected commonality between the two disparate ground states indicates the dominance of itinerant spin dynamics in the ordered low-temperature phases of CeB(6) and throws new light on the interplay between antiferromagnetism, superconductivity and 'hidden' order parameters in correlated-electron materials.

Multipolar phases and magnetically hidden order: review of the heavy-fermion compound Ce1−xLaxB6

Cerium hexaboride is a cubic f-electron heavy-fermion compound that displays a rich array of low-temperature magnetic ordering phenomena which have been the subject of investigation for more than 50