Itinerancy and Hidden Order in $URu_2Si_2$

Details Itinerancy and Hidden Order in $URu_2Si_2$ Itinerancy and Hidden Order in $URu_2Si_2$

2005-06-30

arxiv.org/abs/cond-mat/0507002v2

J. Phys.: Condens. Matter 17, 5285 (2005).

Physics

Condensed Matter

Strongly Correlated Electrons

18 pages, 7 figures. v2 contains added reference

Scientific paper

10.1088/0953-8984/17/34/013

We argue that key characteristics of the enigmatic transition at $T_0= 17.5K $ in $URu_2Si_2$ 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.

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