Irreversible dynamics of the phase boundary in U(Ru0.9)Rh0.04)2Si2 and implications for ordering

Abstract

We report measurements and analysis of the specific heat and magnetocaloric effect at the phase boundary into the single magnetic field-induced phase (phase II) of U(Ru{0.96}Rh{0.04})2Si2, which yield striking similarities to the valence transition of Yb{1-x}YxInCu4. To explain these similarities, we propose a bootstrap mechanism by which a structural distortion causes an electric quadrupolar order parameter within phase II to become coupled to the 5f-electron hybridization, giving rise to a valence change at the transition.

4 pages including 4 figures

References in corpus (14)

• Magnetic Field-Induced Condensation of Triplons in Han Purple Pigment BaCuSi${}_2$O${}_6$
• Hidden Orbital Order in $UR{u}_{2}S{i}_2$
• Helicity Order: Hidden Order Parameter in URu${}_2$Si${}_2$
• 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${}_2$
• Thermal transport in the hidden-order state of URu${}_2$Si${}_2$
• Interplay between SDW and induced local moments in URu2Si2
• Suppression of the $\gamma -\alpha$ structural phase transition in $C{e}_{0.8}L{a}_{0.1}T{h}_{0.1}$ by large magnetic fields
• Micromagnetism in URu2Si2 and high temperature superconductors
• Specific Heat of URu${}_2$Si${}_2$ in Fields to 42 T: Clues to the 'Hidden Order'
• Itinerancy and Hidden Order in $UR{u}_{2}S{i}_2$
• Quantum critical 5f-electrons avoid singularities in U(Ru,Rh)2Si2
• A Simple Model for Coupled Magnetic and Quadrupolar Instabilities in Uranium Heavy-Fermion Materials

Cited by in corpus (13)

• Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2
• Magnetocaloric effect and magnetic cooling near a field-induced quantum-critical point
• Bose-Einstein Condensation of Triplons in Ba3Cr2O8
• Interplay between Fermi surface topology and ordering in URu${}_2$Si${}_2$ revealed through abrupt Hall coefficient changes in strong magnetic fields
• Adiabatic measurements of magneto-caloric effects in pulsed high magnetic fields up to 55 T
• Thermodynamic Investigation of Metamagnetism in Pulsed High Magnetic Fields on Heavy Fermion Superconductor UTe${}_2$
• Enhancement and Discontinuity of Effective Mass through the First-Order Metamagnetic Transition in UTe${}_2$
• Magnetic field induced phenomena in UIrGe in fields applied along b axis
• Magnetic field tuning of antiferromagnetic Yb${}_3$Pt${}_4$
• Irreversible Heating Measurement with Microsecond Pulse Magnet: Example of the alpha-theta Phase Transition of Solid Oxygen
• Mixed-spin system with supersolid phases: Magnetocaloric effect and thermal properties
• High-field phase diagram of the chiral-lattice antiferromagnet Sr(TiO)Cu4(PO4)4
• Field-induced phases in a heavy-fermion U(Ru${}_{0.92}$Rh${}_{0.08}$)${}_2$Si${}_2$ single crystal