Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2

Abstract

This Colloquium reviews the 25 year quest for understanding the continuous (second-order) mean-field-like phase transition occurring at 17.5 K in URu2Si2. About ten years ago, the term hidden order (HO) was coined and has since been utilized to describe the unknown ordered state, whose origin cannot be disclosed by conventional solid-state probes, such as x rays, neutrons, or muons. HO is able to support superconductivity at lower temperatures (Tc ~ 1.5 K), and when magnetism is developed with increasing pressure both the HO and the superconductivity are destroyed. Other ways of probing the HO are via Rh-doping and very large magnetic fields. During the last few years a variety of advanced techniques have been tested to probe the HO state and their attempts will be summarized. A digest of recent theoretical developments is also included. It is the objective of this Colloquium to shed additional light on the HO state and its associated phases in other materials.

25 pages, 16 figures, published in Reviews of Modern Physics

References in corpus (86)

• Topological Insulators
• Superconducting phases of f-electron compounds
• Quantum criticality
• Nature of the 5f states in actinide metals
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions
• From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material)
• Imaging the Fano Lattice to 'Hidden Order' Transition in URu2Si2
• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Hidden order in 1D Bose insulators
• The Ground State of the Pseudogap in Cuprate Superconductors
• Arrested Kondo effect and hidden order in URu_2Si_2
• Hidden Orbital Order in $UR{u}_{2}S{i}_2$
• Exotic Superconducting Properties in the Electron-Hole Compensated Heavy Fermion `Semimetal' URu2Si2
• Visualizing the Formation of the Kondo Lattice and the Hidden Order in URu2Si2
• Effect of Pressure on Tiny Antiferromagnetic Moment in the Heavy-Electron Compound URu_2Si_2
• Triple-q octupolar ordering in NpO_2
• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Helicity Order: Hidden Order Parameter in URu${}_2$Si${}_2$
• Theory of Unconventional Spin Density Wave: A Possible Mechanism of the Micromagnetism in U-based Heavy Fermion Compounds
• Fermi surface instability at the hidden-order transition of URu2Si2
• Electron Cotunneling into a Kondo Lattice
• Similarity of Fermi Surface in the Hidden Order State and in the Antiferromagnetic State of URu2Si2
• Lattice effects and entropy release at the low-temperature phase transition in the spin-liquid candidate $\kappa$-(BEDT-TTF)${}_2$Cu${}_2$(CN)${}_3$
• A Hierarchically-Organized Phase Diagram near a Quantum Critical Point in URu2Si2
• Group theory and octupolar order in URu2Si2
• High Field Studies of the Hidden Order Transition in URu${}_2$Si${}_2$
• Why the hidden order in URu2Si2 is still hidden - one simple answer
• Differential Conductance and Quantum Interference in Kondo Systems
• Itinerant magnetic multipole moments of rank five, triakontadipoles, as the hidden order in URu${}_2$Si${}_2$
• Thermal transport in the hidden-order state of URu${}_2$Si${}_2$
• Electronic structure theory of the hidden order material URu${}_2$Si${}_2$
• Hidden Order in $UR{u}_{2}S{i}_2$
• Thermoelectricity of URu${}_2$Si${}_2$: giant Nernst effect in the hidden-order state
• Spin nematic state as a candidate of the hidden order phase of URu${}_2$Si${}_2$
• Inflection point in the magnetic field dependence of the ordered moment of URu2Si2 observed by neutron scattering in fields up to 17 T
• Interplay between SDW and induced local moments in URu2Si2
• On the Hidden Order in URu${}_2$Si${}_2$ --- Antiferro Hexadecapole Order and its Consequences
• Parasitic small-moment-antiferromagnetism and non-linear coupling of hidden order and antiferromagnetism in URu2Si2 observed by Larmor diffraction
• Field-angle-dependent specific heat measurements and gap determination of a heavy fermion superconductor URu2Si2
• Hybridization wave as the 'Hidden Order' in URu${}_2$Si${}_2$
• Re-entrant hidden order at a metamagnetic quantum critical end point
• The modulated spin liquid: a new paradigm for URu${}_2$Si${}_2$
• Singlet Magnetism in Heavy Fermions
• Precise study of the resonance at Q0=(1,0,0) in URu2Si2
• Interplay between Fermi surface topology and ordering in URu${}_2$Si${}_2$ revealed through abrupt Hall coefficient changes in strong magnetic fields
• Antiferromagnetic critical pressure in URu2Si2 under hydrostatic conditions
• Evolution of critical scaling behavior near a ferromagnetic quantum phase transition
• Tunneling into clean Heavy Fermion Compounds: Origin of the Fano Lineshape
• The Ising-Kondo lattice with transverse field: an f-moment Hamiltonian for URu2Si2?
• 29-Si NMR and Hidden Order in URu2Si2
• Competition between hidden order and antiferromagnetism in URu_2Si_2 under uniaxial stress studied by neutron scattering
• Competing Ordered Phases in URu2Si2: Hydrostatic Pressure and Re-substitution
• Mesoscopic Phase Coherence in a Quantum Spin Fluid
• Details of Sample Dependence and Transport Properties of URu2Si2
• Possible Phase Transition Deep Inside the Hidden Order Phase of Ultraclean URu2Si2
• Determination of the Antiferroquadrupolar Order Parameters in UPd3
• Properties and Detection of Spin Nematic Order in Strongly Correlated Electron Systems
• Anomalous Femtosecond Quasiparticle Dynamics of Hidden Order State in URu${}_2$Si${}_2$
• Complex Landau Ginzburg Theory of the Hidden Order in URu_2Si_2
• The degree of 5f electron localization in URu2Si2: electron energy-loss spectroscopy and spin-orbit sum rule analysis
• Point-contact spectroscopy on URu${}_2$Si${}_2$
• Signatures of hidden order symmetry in torque oscillations, elastic constant anomalies and field induced moments in URu2Si2
• First-Principles Theory of Multipolar Order in Neptunium Dioxide
• Incommensurate spin resonance in URu2Si2
• The Fano effect in the point contact spectroscopy of heavy electron materials
• Field Reentrance of the Hidden Order State of URu2Si2 under Pressure
• Induced-Moment Weak Antiferromagnetism and Orbital Order on the Itinerant-Localized Duality Model with Nested Fermi Surface: A Possible Origin of Exotic Magnetism in URu${}_2$Si${}_2$
• Electrical Resistivity and Thermal Expansion Measurements of URu2Si2 under Pressure
• Phonon Thermal Transport of URu2Si2: Broken Translational Symmetry and Strong-Coupling of the Hidden Order to the Lattice
• Chirality Induced Tilted-Hill Giant Nernst Signal
• Pressure dependence of the magnetization of URu2Si2
• Flux Line Lattice Melting and the Formation of a Coherent Quasiparticle Bloch State in the Ultraclean URu${}_2$Si${}_2$ Superconductor
• On the destruction of the hidden order in URu${}_2$Si${}_2$ by a strong magnetic field
• Itinerant spin excitations near the hidden order transition in URu2Si2
• Specific Heat of URu${}_2$Si${}_2$ in Fields to 42 T: Clues to the 'Hidden Order'
• Irreversible dynamics of the phase boundary in U(Ru0.9)Rh0.04)2Si2 and implications for ordering
• Itinerancy and Hidden Order in $UR{u}_{2}S{i}_2$
• Quantum critical 5f-electrons avoid singularities in U(Ru,Rh)2Si2
• Uncovering the Hidden Order in URu2Si2 by Impurity Doping
• Skutterudite Results Shed Light on Heavy Fermion Physics
• Sequence of multipolar transitions: Scenarios for URu2Si2
• Local suppression of the hidden order phase by impurities in URu2Si2
• Charge density wave in hidden order state of URu${}_2$Si${}_2$
• Magnetic Correlations and the Anisotropic Kondo Effect in Ce1-xLaxAl3
• Magnetization, Maxwell's Relations and the Local Physics of the Dilute System Th_{1-x}U_{x}Ru_{2}Si_{2}
• Pressure dependence of magnetism in URu2Si2

Cited by in corpus (218)

• Metallic Quantum Ferromagnets
• Topological surface state in the Kondo Insulator Samarium Hexaboride
• Unconventional Superconductivity
• HORACE: software for the analysis of data from single crystal spectroscopy experiments at time-of-flight neutron instruments
• Odd-frequency superconductivity
• Nernst effect in metals and superconductors: a review of concepts and experiments
• Topological surface states in nodal superconductors
• Emergent Rank-5 'Nematic' Order in URu2Si2
• A review of two-band superconductivity: materials and effects on the thermodynamic and reversible mixed-state properties
• Hastatic Order in URu2Si2
• Evidence for broken time-reversal symmetry in the superconducting phase of URu${}_2$Si${}_2$
• Chirality density wave of the 'hidden order' phase in URu${}_2$Si${}_2$
• Excitonic condensation in systems of strongly correlated electrons
• Single-component superconducting state in UTe2 at 2 K
• Hidden Order Behaviour in URu2Si2 (A Critical Review of the Status of Hidden Order in 2014)
• First-principles theory of magnetic multipoles in condensed matter systems
• Detection of multipolar orders in the spin-orbit-entangled 5d Mott insulator Ba2MgReO6
• Observation of the hybridization gap and Fano resonance in the Kondo lattice URu2Si2
• Probing hidden spin order with interpretable machine learning
• Intertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO${}_4$
• Hidden order and beyond: an experimental-theoretical overview of the multifaceted behavior of URu${}_2$Si${}_2$
• Multipolar phases and magnetically hidden order: Review of the heavy-fermion compound Ce(1-x)La(x)B6
• Photoemission Imaging of 3D Fermi Surface Pairing at the Hidden Order Transition in URu2Si2
• Unconventional Magnetic Ground State in Yb${}_2$Ti${}_2$O${}_7$
• Heavy fermions in high magnetic field
• Emergent states in heavy electron materials
• Resonant magnetic exciton mode in the heavy-fermion antiferromagnet CeB6
• Evidence for a nematic component to the Hidden Order parameter in URu2Si2 from differential elastoresistance measurements
• Colossal thermomagnetic response in the exotic superconductor URu2Si2
• Excitonic condensation of strongly correlated electrons: the case of Pr${}_{0.5}$Ca${}_{0.5}$CoO${}_3$
• Direct observation of lattice symmetry breaking at the hidden-order transition in URu2Si2
• Microscopic theory of the insulating electronic ground states of actinide dioxides AnO2 (An=U, Np, Pu, Am, and Cm)
• Intense low-energy ferromagnetic fluctuations in the antiferromagnetic heavy-fermion metal CeB6
• Long range order and two-fluid behavior in heavy electron materials
• Cyclotron Resonance in the Hidden-Order Phase of URu2Si2
• Hidden and antiferromagnetic order as a rank-5 superspin in URu2Si2
• Resonant x-ray spectroscopy of uranium intermetallics at the U $M_{4,5}$ edges
• Spin and orbital hybridization at specifically nested Fermi surfaces in URu${}_2$Si${}_2$
• Momentum-resolved evolution of the Kondo lattice into 'hidden-order' in URu2Si2
• Selective measurements of intertwined multipolar orders: non-Kramers doublets on a triangular lattice
• Formation of the coherent heavy fermion liquid at the 'hidden order' transition in URu2Si2
• One-Component Order Parameter in URu${}_2$Si${}_2$ Uncovered by Resonant Ultrasound Spectroscopy and Machine Learning
• Measurements of the NMR Knight shift tensor and nonlinear magnetization in URu${}_2$Si${}_2$
• Competition between the Pseudogap and Superconducting States of Bi${}_2$Sr${}_2$Ca${}_{0.92}$Y${}_{0.08}$Cu${}_2$O${}_{8+\delta }$ Single Crystals Revealed by Ultrafast Broadband Optical Reflectivity
• Field-induced spin-density wave beyond hidden order in URu2Si2
• Evidence for chiral d-wave superconductivity in URu2Si2 from the field-angle variation of its specific heat
• Dual nature of 5$f$ electrons in the isostructural UM${}_2$Si${}_2$ family: from antiferro- to Pauli paramagnetism via hidden order
• Spin-orbit density wave induced hidden topological order in URu2Si2
• Direct bulk sensitive probe of 5f symmetry in URu2Si2
• Selection rules for Cooper pairing in two-dimensional interfaces and sheets
• The Superfluid Glass Phase of 3He-A
• Chemical pressure tuning of URu${}_2$Si${}_2$ via isoelectronic substitution of Ru with Fe
• Synchrotron Radiation Techniques and their Application to Actinide Materials
• Probing 5f-state configurations in URu2Si2 with U L3-edge resonant x-ray emission spectroscopy
• Direct experimental observation of the molecular Jeff=3/2 ground state in the lacunar spinel GaTa4Se8
• Resolution of Entropy $\ln \sqrt{2}$ by Ordering in Two-Channel Kondo Lattice
• Interplay of magnetism, Fermi surface reconstructions, and hidden-order in the heavy-fermion material URu${}_2$Si${}_2$
• Symmetry of the Excitations in the Hidden Order State of URu2Si2
• Sequential localization of a complex electron fluid
• Analogy between the "Hidden Order" and the Orbital Antiferromagnetism in URu${}_{2-x}$Fe${}_x$Si${}_2$
• Simulating the Haldane Phase in Trapped Ion Spins Using Optical Fields
• Two-site fluctuations and multipolar superexchange interactions in strongly correlated systems
• Order Fractionalization in a Kitaev-Kondo model
• Lifshitz transition from valence fluctuations in YbAl3
• Heat capacity double transitions in time-reversal symmetry broken superconductors
• Neutron scattering studies on URu2Si2
• Phase diagram and thermal expansion measurements on the system of URu_{2-x}Fe_xSi_2
• Unfolding the physics of URu2Si2 through Si -> P substitution
• The Tricritical Point of the f-electron Antiferromagnet USb2 Driven by High Magnetic Fields
• Hastatic Order in URu2Si2 : Hybridization with a Twist
• Universal Knight shift anomaly in the Periodic Anderson model
• Spontaneous Spatial Inversion Symmetry Breaking and Spin Hall Effect in a Spin-ice Double-exchange Model on a Pyrochlore Lattice
• Hidden order pseudogap in URu${}_2$Si${}_2$
• Revealing the nature of antiferro-quadrupolar ordering in Cerium Hexaboride: CeB${}_6$
• Classification of nematic order in 2+1D: Dislocation melting and $O(2)/Z_N$ lattice gauge theory
• Understanding Magnetic Properties of Actinide-Based Compounds from Machine Learning
• Thermodynamic approach to electric quadrupole moments
• Hidden order and multipolar exchange striction in a correlated f-electron system
• Fragile antiferromagnetism in the heavy-fermion compound YbBiPt
• Absence of a static in-plane magnetic moment in the "hidden-order" phase of URu${}_2$Si${}_2$
• Antiferromagnetism and Hidden Order in Isoelectronic Doping of URu${}_2$Si${}_2$
• Charge density wave with anomalous temperature dependence in UPt2Si2
• Fermi Surface Nesting with Heavy Quasiparticles in the Locally Noncentrosymmetric Superconductor CeRh${}_2$As${}_2$
• Effective Coulomb interaction in actinides from linear response approach
• Pressure-Induced Rotational Symmetry Breaking in URu${}_2$Si${}_2$
• Modelling Magnetic Multipolar Phases in Density Functional Theory
• Critical theory of non-Fermi liquid fixed point in multipolar Kondo problem
• Strict limit on in-plane ordered magnetic dipole moment in URu2Si2
• Lattice dynamics of the heavy fermion compound URu${}_2$Si${}_2$
• Pressure-Tuned Point-Contact Spectroscopy of URu2Si2 from Hidden Order to Antiferromagnetic States: Similarity of the Fermi Surface Gapping
• Unusual Nonmagnetic Ordered State in CeCoSi Revealed by ${}^{59}$Co-NMR and NQR Measurements
• High-magnetic field lattice length changes in URu2Si2
• Anomalous Hall effect in heavy electron materials
• The dual nature of magnetism in a uranium heavy fermion system
• Singlet magnetism in intermetallic UGa${}_2$ unveiled by inelastic x-ray scattering
• Hybridization gap versus hidden order gap in URu${}_2$Si${}_2$ as revealed by optical spectroscopy
• Hidden orders in spin-orbit entangled correlated insulators
• Spin current and chirality degrees of freedom inherent in localized electron orbitals
• Isoelectronic perturbations to $f$-$d$-electron hybridization and the enhancement of hidden order in URu${}_2$Si${}_2$
• Multipole order and global/site symmetry in the hidden order phase of URu2Si2
• Observation of Multiple-Gap Structure in Hidden Order State of URu2Si2 from Optical Conductivity
• Magnetic Exciton Mediated Superconductivity in the Hidden-Order Phase of URu2Si2
• Incommensurate short-range multipolar order parameter of phase II in Ce3Pd20Si6
• Exactly Solvable Kondo Lattice Model in Anisotropic Limit
• Distinct magnetic spectra in the hidden order and antiferromagnetic phases in URu2-xFexSi2
• Nuclear magnetic resonance studies of pseudospin fluctuations in URu${}_2$Si${}_2$
• Local observation of linear-$T$ superfluid density and anomalous vortex dynamics in URu${}_2$Si${}_2$
• Electronic nematicity in URu2Si2 revisited
• Emergent non-Fermi-liquid phenomena in multipolar quantum impurity systems
• Charge-$2e$ Skyrmion condensate in a hidden order state
• Search for Multipolar Instability in URu${}_2$Si${}_2$ Studied by Ultrasonic Measurements under Pulsed Magnetic Field
• Cyclotron resonance study of quasiparticle mass and scattering rate in the hidden-order and superconducting phases of URu2Si2
• ARPES/STM study of the surface terminations and 5$f$-electron character in URu${}_2$Si${}_2$
• Field induced Lifshitz transition in UPt${}_2$Si${}_2$: Fermi surface under extreme conditions
• Structure of the normal state and origin of Schottky anomaly in the correlated heavy fermion superconductor UTe2
• Imprints of spin-orbit density wave in the hidden order state of URu2Si2
• Optical conductivity of URu${}_2$Si${}_2$ in the Kondo Liquid and Hidden-Order Phases
• Signatures of hidden octupolar order from nonlinear Hall effects
• Detailed optical spectroscopy of the hybridization gap and the hidden order transition in high quality URu${}_2$Si${}_2$ single crystals
• On the possibility to detect multipolar order in URu${}_2$Si${}_2$ by the electric quadrupolar transition of resonant elastic X-ray scattering
• Structure of vortex-bound states in spin-singlet chiral superconductors
• Nature of the unconventional heavy fermion Kondo state in monolayer CeSiI
• Relation between $c$-$f$ hybridization and magnetic ordering in CeRu${}_2$Al${}_{10}$: An optical conductivity study of Ce(Ru${}_{1-x}$Rh${}_x$)${}_2$Al${}_{10}$ ($x\le 0.05$)
• Weak-coupling superconductivity in an anisotropic three-dimensional repulsive Hubbard model
• Superconducting phase within the hidden-order state of the heavy-fermion material $\mathrm{UR}{\mathrm{u}}_2\mathrm{S}{\mathrm{i}}_2$
• 3D Modulated Spin Liquid model applied to URu${}_2$Si${}_2$
• Hidden Charge Order in an Iron Oxide Square-Lattice Compound
• Magnetic field-Temperature Phase Diagram of CeCoSi Constructed by Specific Heat, Magnetoresistivity, and Magnetization Measurements for a Single Crystal
• Fermi surface in the hidden-order state of URu${}_2$Si${}_2$ under intense pulsed magnetic fields up to 81~T
• Interplay of superexchange and vibronic effects in the hidden order of Ba${}_2$MgReO${}_6$ from first principles
• From local moment to mixed-valence regime in Ce(1-x)Yb(x)CoIn5 alloys
• Electronic structure of ThRu2Si2 studied by angle-resolved photoelectron spectroscopy: Elucidating the contribution of U 5f states in URu2Si2
• Hidden Order Signatures in the Antiferromagnetic Phase of U(Ru${}_{1-x}$Fe${}_x$)${}_2$Si${}_2$
• Thermodynamic Measurement of Angular Anisotropy at the Hidden Order Transition of URu${}_2$Si${}_2$
• Strong Correlation between Anomalous Quasiparticle Scattering and Unconventional Superconductivity in Hidden Order Phase of URu${}_2$Si${}_2$
• Unconventional Superconductivity arising from Multipolar Kondo Interactions
• Fermi-Surface Selective Determination of the $\mathbf{g}$-Factor Anisotropy in URu${}_2$Si${}_2$
• Electronic properties of a heavy-fermion U(Ru0.92Rh0.08)2Si2 single crystal
• Role of commensurate and incommensurate low-energy excitations in the paramagnetic to hidden-order transition of URu${}_2$Si${}_2$
• Exceptional Ising Magnetic Behavior of Itinerant Spin-polarized Carriers in URu2Si2
• Novel critical behavior of magnetization in URhSi:Similarities to uranium ferromagnetic superconductors UGe${}_2$ and URhGe
• A microscopic Kondo lattice model for the heavy fermion antiferromagnet CeIn${}_3$
• Hybridization gap in the heavy-fermion compound UPd${}_2$Al${}_3$ via quasiparticle scattering spectroscopy
• Thermodynamic evidence for broken fourfold rotational symmetry in the hidden-order phase of URu2Si2
• Observation of Electronic Structure Modification in the Hidden Order Phase of CeCoSi
• Inelastic x-ray scattering measurements on URu2Si2
• Hidden and Hastatic Orders in URu2Si2
• Basal-Plane Nonlinear Susceptibility: A Direct Probe of the Single-Ion Physics in URu2Si2
• Composite Orders and Lifshitz Transition of Heavy Electrons
• A "hidden" transition in heavy fermion compound CeB${}_6$ at $T\sim$ 20 K?
• Modulated Spin Liquid and Magnetic Order from a Kondo-Heisenberg model applied to $UR{u}_{2}S{i}_2$
• Magnetoelastic phenomena in antiferromagnetic uranium intermetallics: the $\mathrm{UA}{\mathrm{u}}_2\mathrm{S}{\mathrm{i}}_2$ case
• Simulating heavy fermion physics in optical lattice: Periodic Anderson model with harmonic trapping potential
• Magnetic structure in U(Ru0.92Rh0.08)2Si2 single crystal studied by neutron diffraction in static magnetic fields up to 24 T
• Magnetic-field-induced chiral hidden order in URu2Si2
• Angular Dependence of the High-Magnetic-Field Phase Diagram of URu2Si2
• Quantum Phase Transition in a Clean Two-Dimensional Electron System
• From hidden-order to antiferromagnetism: electronic structure changes in Fe-doped URu${}_2$Si${}_2$
• Electronic correlations of element cerium under high pressure
• Theory Perspective: SCES 2016
• Evolution of the propagation vector of antiferroquadrupolar phases in Ce3Pd20Si6 with magnetic field
• Tunneling spectroscopy of the superconducting state of URu2Si2
• Global perspectives of the bulk electronic structure of URu${}_2$Si${}_2$ from angle-resolved photoemission
• Cascade of magnetic-field-driven quantum phase transitions in Ce3Pd20Si6
• Origin of gap-like behaviors in URu${}_2$Si${}_2$: Combined study via quasiparticle scattering spectroscopy and resistivity measurements
• An emerging global picture of heavy fermion physics
• NMR Investigation of antiferromagnetism and coherence in URu${}_2$Si${}_{2-x}$P${}_x$
• Efficient Method for Prediction of Meta-stable/Ground Multipolar Ordered States and its Application in Monolayer $\alpha$-\ce{RuX3} (X=Cl,I)
• Skyrmions in a density wave state: a mechanism for chiral superconductivity
• Spin liquid versus long range magnetic order in the frustrated body-centered tetragonal lattice
• Hidden order symmetry and superconductivity in URu2Si2 investigated by quasiparticle interference
• Spin liquid versus long range magnetic order in the frustrated body-centered tetragonal lattice
• In-plane anisotropic response to the uniaxial pressure in the hidden order state of URu${}_2$Si${}_2$
• Collective spin resonance excitation in the gapped itinerant multipole hidden order phase of URu2Si2
• Anisotropic Kondo pseudo-gap in URu2Si2
• Fe substitution in URu${}_2$Si${}_2$: singlet magnetism in an extended Doniach phase diagram
• Non-collinear magnetism engendered by a hidden another order
• Unfolding of antiferromagnetic phases and multicritical points in a two-orbital model for Uranium compounds under pressure and magnetic field
• Hidden spin-orbital hexagonal ordering induced by strong correlations in LiVS${}_2$
• The role of band filling in tuning the high field phases of URu2Si2
• URu${}_2$Si${}_2$ under intense magnetic fields: from hidden order to spin-density wave
• 29Si nuclear magnetic resonance study of URu2Si2 under pressure
• Recent Progress of Point Contact Spectroscopy as a Probe of Correlated Electron States
• Molecular orbital polarization in Na2Ti2Sb2O: microscopic route to metal-metal transition without spontaneous symmetry breaking
• Spins, electrons and broken symmetries: realizations of two channel Kondo physics
• Perfectly hidden order and Z2 confinement transition in a fully packed monopole liquid
• Nonlinear Transport Signatures of Hidden Symmetry Breaking in a Weyl Altermagnet
• The Fermi volume as a probe of hidden order
• Analysis of Magnetoacoustic Quadrupole Resonance and Application to Probe Quadrupole Degrees of Freedom in Quantum Magnets
• Textured Superconductivity in the Presence of a Coexisting Order: Ce115s and Other Heavy-Fermion Compounds
• Quasiparticle Relaxation Dynamics in URu${}_{2-x}$Fe${}_x$Si${}_2$ Single Crystals
• Raman Active High Energy Excitations in URu${}_2$Si${}_2$
• Correlation and disorder-enhanced nematic spin response in superconductors with weakly broken rotational symmetry
• The hidden order in URu2Si2: Symmetry-induced anti-toroidal vortices
• Universal behavior in the Nernst effect of heavy fermion materials
• Novel universality class for the ferromagnetic transition in the low carrier concentration systems UTeS and USeS exhibiting large negative magnetoresistance
• Implications of the Measured Angular Anisotropy at the Hidden Order Transition of URu2Si2
• A Model for Metastable Magnetism in the Hidden-Order Phase of URu2Si2
• Chiral superconductivity in nematic states
• Study of the hidden-order of URu2Si2 by point contact tunnel junctions
• Hidden Anderson Localization in Disorder-Free Ising-Kondo Lattice
• One-dimensional moire charge density wave in the hidden order state of URu2Si2 induced by fracture
• Origin of the Large Anisotropy in the χ_3 Anomaly in URu_2Si_2
• Emergence of quadrupolar order under magnetic field in $5d^2$ double perovskites
• Ungapped magnetic excitations beyond Hidden Order in URu${}_{2-x}$Re${}_x$Si${}_2$
• Nematic correlations and nematic Berezinskii-Kosterlitz-Thouless transition in spin-1 kagome lattice antiferromagnets
• f-electron charge densities probed using core level non-resonant inelastic x-ray scattering
• Collinear antiferromagnetic order in URu${}_2$Si${}_{2-x}$P${}_x$ revealed by neutron diffraction
• Field-induced phases in a heavy-fermion U(Ru${}_{0.92}$Rh${}_{0.08}$)${}_2$Si${}_2$ single crystal
• Detecting the Largest Correlations using the Correlation Density Matrix: a Quantum Monte Carlo Approach
• Magnetic transitions induced by pressure and magnetic field in a two-orbital $5f$-electron model in cubic and tetragonal lattices
• Unified Theory of Hastatic order and Antiferromagnetism in URu${}_2$Si${}_2$
• Pseudo-chiral phonon splitting from octupolar magnetic order
• Evolution of magnetic bubble domains in the uniaxial ferromagnet CeRu${}_2$Ga${}_2$B inferred from the Hall effect and ac magnetic susceptibility
• Large Kohn anomaly and phonon collapse induced by charge density wave in UPt${}_2$Si${}_2$
• Spin-orbit coupled periodic Anderson model: Kondo-Dirac semimetal and orbital-selective antiferromagnetic semimetal
• Multiple localized-itinerant dualities in magnetism of 5f electron systems. The case of UPt${}_2$Si${}_2$
• Two-orbital model for CeB${}_6$