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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-2538
DTSTART:20120412T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260420T062817Z
LAST-MODIFIED:20120113T204705Z
LOCATION:5310 Chamberlin
SUMMARY:The modulated spin liquid and hidden order in URu2Si2\, R. G. 
 Herb Condensed Matter Seminar\, Sébastien Burdin\, University of Bord
 eaux\, France
DESCRIPTION:We have shown that near a Kondo breakdown critical point\,
  a spin liquid with spatial modulations is likely to be formed. Unlike
  its uniform counterpart\, we find that this occurs via a second order
  phase transition. The amount of entropy quenched when this ordering i
 s manifest is of the same magnitude as for an antiferromagnet. Moreove
 r\, these two states are in direct competition with each other\, and a
 t low temperatures they are separated by a first order phase transitio
 n. This suggests that the modulated spin liquid is indeed a viable can
 didate for the unique phase of matter which is observed in the hidden 
 order phase of URu2Si2. We investigate the modulated spin liquid propo
 sal taking full account of the tetragonal-body-centered lattice struct
 ure which characterizes URu2Si2. We find that the physical quantities 
 predicted from the model are in very good qualitative and quantitative
  agreement with recent experiments\, including thermodynamic propertie
 s\, inelastic neutron scattering\, and Fermi surface measurements. We 
 also present an overview of other f-electron compounds where similar p
 hases have been observed.<br>
\n<br>
\nC. Pepin\, M.R. Norman\, S. Bur
 din\, and A. Ferraz\, Phys. Rev. Lett. 106\, 106601 (2011)<br>
\n<br>

 \nC. Thomas\, S. Burdin\, C. Pepin\, and A. Ferraz\, in preparation. 
URL:https://www.physics.wisc.edu/events/?id=2538
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