Itinerancy and Hidden Order in $UR{u}_{2}S{i}_2$

Abstract

We argue that key characteristics of the enigmatic transition at $T_0=17.5K$ in $UR{u}_{2}S{i}_2$ indicate that the hidden order is a density wave formed within a band of composite quasiparticles, whose detailed structure is determined by local physics. We expand on our proposal (with J.A. Mydosh) of the hidden order as incommnesurate orbital antiferromagnetism and present experimental predictions to test our ideas. We then turn towards a microscopic description of orbital antiferromagnetism, exploring possible particle-hole pairings within the context of a simple one-band model. We end with a discussion of recent high-field and thermal transport experiment, and discuss their implications for the nature of the hidden order.

18 pages, 7 figures. v2 contains added reference

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Cited by in corpus (14)

• Colloquium: Hidden Order, Superconductivity, and Magnetism -- The Unsolved Case of URu2Si2
• Fermi liquid instabilities in the spin channel
• Visualizing the Formation of the Kondo Lattice and the Hidden Order in URu2Si2
• Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu${}_2$Si${}_2$
• Fermi surface instability at the hidden-order transition of URu2Si2
• Symmetry and correlations underlying Hidden Order in URu2Si2
• Itinerant spin excitations near the hidden order transition in URu2Si2
• Sleuthing Hidden Order
• Irreversible dynamics of the phase boundary in U(Ru0.9)Rh0.04)2Si2 and implications for ordering
• Critical theory of non-Fermi liquid fixed point in multipolar Kondo problem
• Theory Perspective: SCES '05 Vienna
• Kondo Stripes in an Anderson-Heisenberg Model of Heavy Fermion Systems
• Absence of a true long-range orbital order in a two-leg Kondo ladder
• Phenomenological theory of the superconducting state inside the hidden-order phase of URu${}_2$Si${}_2$