Inelastic x-ray scattering measurements on URu2Si2

Abstract

We report high-resolution inelastic x ray scattering measurements of the acoustic phonons of URu2Si2. We observe minimal change in the phonon structure upon entering the Hidden Order phase. At all temperatures, the longitudinal acoustic phonons are anomalously broad at low q. There is no evidence to suggest that the increase in thermal conductivity in the Hidden Order phase is driven by a change in phonon dispersions or lifetimes. A more likely explanation is that the magnetic excitations in the Hidden Order state contribute to thermal transport.

5 pages, 4 figures, Final version will appear in Phys. Rev. B

References in corpus (18)

• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Emergent Rank-5 'Nematic' Order in URu2Si2
• Hastatic Order in URu2Si2
• Chirality density wave of the 'hidden order' phase in URu${}_2$Si${}_2$
• Hidden Order Behaviour in URu2Si2 (A Critical Review of the Status of Hidden Order in 2014)
• Magnetic phase transitions and magnetoelectric coupling of GdFeO_3 single crystals probed by low-temperature heat transport
• Interplay between SDW and induced local moments in URu2Si2
• The modulated spin liquid: a new paradigm for URu${}_2$Si${}_2$
• Direct observation of lattice symmetry breaking at the hidden-order transition in URu2Si2
• Cyclotron Resonance in the Hidden-Order Phase of URu2Si2
• Neutron scattering studies on URu2Si2
• Γ3-type Lattice Instability and the Hidden Order of URu2Si2
• Lattice dynamics of the heavy fermion compound URu${}_2$Si${}_2$
• Multipole order and global/site symmetry in the hidden order phase of URu2Si2
• Cyclotron resonance study of quasiparticle mass and scattering rate in the hidden-order and superconducting phases of URu2Si2
• Neutron Scattering Study of URu${}_{2-x}$Re${}_x$Si${}_2$ with $x$ = 0.10: Driving Order towards Quantum Criticality
• Observation of the Thermal Conductivity due to Spins in the One-Dimensional Antiferromagnetic Ising-Like Spin System ACoX3 (A = Rb, Cs; X = Cl, Br)

Cited by in corpus (4)

• Hidden order and beyond: an experimental-theoretical overview of the multifaceted behavior of URu${}_2$Si${}_2$
• Synchrotron Radiation Techniques and their Application to Actinide Materials
• Magneto-transport properties of CeRu${}_2$Al${}_{10}$: Similarities to URu${}_2$Si${}_2$
• One-dimensional moire charge density wave in the hidden order state of URu2Si2 induced by fracture