Cascade of magnetic-field-driven quantum phase transitions in Ce3Pd20Si6

Abstract

Magnetically hidden order is a hypernym for electronic ordering phenomena that are visible to macroscopic thermodynamic probes but whose microscopic symmetry cannot be revealed with conventional neutron or x-ray diffraction. In a handful of f-electron systems, the ordering of odd-rank multipoles leads to order parameters with a vanishing neutron cross-section. Among them, Ce${}_3$Pd${}_{20}$Si${}_6$ is known for its unique phase diagram exhibiting two distinct multipolar-ordered ground states (phases II and II'), separated by a field-driven quantum phase transition associated with a putative change in the ordered quadrupolar moment from $O_2^0$ to $O_{xy}$. Using torque magnetometry at subkelvin temperatures, here we find another phase transition at higher fields above 12 T, which appears only for low-symmetry magnetic field directions $\mathbf{B}\parallel ⟨11L⟩$ with $1<L\le 2$. While the order parameter of this new phase II'' remains unknown, the discovery renders Ce${}_3$Pd${}_{20}$Si${}_6$ a unique material with two field-driven phase transitions between distinct multipolar phases. They are both clearly manifested in the magnetic-field dependence of the field-induced (111) Bragg intensities measured with neutron scattering for $\mathbf{B}\parallel [112]$. We also find from inelastic neutron scattering that the number of nondegenerate collective excitations induced by the magnetic field correlates with the number of phases in the magnetic phase diagram for the same field direction. Furthermore, the magnetic excitation spectrum suggests that the new phase II'' may have a different propagation vector, revealed by the minimum in the dispersion that may represent the Goldstone mode of this hidden-order phase.

arXiv comment10 pages, 6 figures, 3 tables

References in corpus (35)

• Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2
• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Arrested Kondo effect and hidden order in URu_2Si_2
• Hidden Orbital Order in $UR{u}_{2}S{i}_2$
• Triple-q octupolar ordering in NpO_2
• Emergent Rank-5 'Nematic' Order in URu2Si2
• Destruction of Kondo effect in cubic heavy fermion compound Ce3Pd20Si6
• New high magnetic field phase of the frustrated $S=1/2$ chain compound LiCuVO${}_4$
• Antiferro-quadrupole Ordering of CeB${}_6$ Studied by Resonant X-ray Scattering
• Description of Multipole in f-Electron Systems
• Multipole classification in 122 magnetic point groups for unified understanding of multiferroic responses and transport phenomena
• Intertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO${}_4$
• Multipolar phases and magnetically hidden order: Review of the heavy-fermion compound Ce(1-x)La(x)B6
• Possible quadrupole density wave in the superconducting Kondo lattice CeRh2As2
• Magnetic-Field-Induced 4f-Octupole in CeB6 Probed by Resonant X-ray Diffraction
• Non-Collinear Magnetism due to Orbital Degeneracy and Multipolar Interactions
• A theory of the electric quadrupole contribution to resonant x-ray scattering: Application to multipole ordering phases in Ce_{1-x}La_{x}B_{6}
• Sequential localization of a complex electron fluid
• Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6
• Broken symmetries in URu2Si2
• Putative spin-nematic phase in BaCdVO(PO${}_4$)${}_2$
• Hidden order and multipolar exchange striction in a correlated f-electron system
• Stripe-yz magnetic order in the triangular-lattice antiferromagnet KCeS2
• Derivation of RKKY Interaction between Multipole Moments in CeB${}_6$ by the Effective Wannier Model based on the Bandstructure Calculation
• Field-angle resolved magnetic excitations as a probe of hidden-order symmetry in CeB6
• Large positive correlation between the effective electron mass and the multipolar fluctuation in the heavy-fermion metal Ce${}_{1-x}$La${}_x$B${}_6$
• Incommensurate short-range multipolar order parameter of phase II in Ce3Pd20Si6
• Momentum-space structure of quasielastic spin fluctuations in Ce3Pd20Si6
• Magnetism, quantum criticality, and metal-insulator transitions in $R{\mathrm{B}}_{12}$
• Crystal structures of dodecaborides: complexity in simplicity
• Neutron-scattering studies of spin dynamics in pure and doped CeB6
• Quantum Criticality and Novel Phases: Summary and Outlook
• Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 with magnetic field
• Local origin of the strong field-space anisotropy in the magnetic phase diagrams of Ce${}_{1-x}$La${}_x$B${}_6$ measured in a rotating magnetic field
• ${}^{105}$Pd NMR and NQR study of the cubic heavy fermion system Ce${}_3$Pd${}_{20}$Si${}_6$

Cited by in corpus (2)

• Quantum impurity model for two-stage multipolar ordering and Fermi surface reconstruction
• Quantum Fisher information in a strange metal