Analogy Between the "Hidden Order" and the Orbital Antiferromagnetism in URu_{2-x}Fe_{x}Si_{2}.

  title={Analogy Between the "Hidden Order" and the Orbital Antiferromagnetism in URu\_\{2-x\}Fe\_\{x\}Si\_\{2\}.},
  author={H.-H. Kung and Sheng Ran and Noravee Kanchanavatee and Viktor Krapivin and A. Lee and John A. Mydosh and Kristjan Haule and M. Brian Maple and Girsh Blumberg},
  journal={Physical review letters},
  volume={117 22},
We study URu_{2-x}Fe_{x}Si_{2}, in which two types of staggered phases compete at low temperature as the iron concentration x is varied: the nonmagnetic "hidden order" (HO) phase below the critical concentration x_{c}, and unconventional antiferromagnetic (AFM) phase above x_{c}. By using polarization resolved Raman spectroscopy, we detect a collective mode of pseudovectorlike A_{2g} symmetry whose energy continuously evolves with increasing x; it monotonically decreases in the HO phase until… Expand
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