Partial field-induced magnetic order in the spin-liquid kagomé Nd3Ga5SiO14.

نویسندگان

  • H D Zhou
  • B W Vogt
  • J A Janik
  • Y-J Jo
  • L Balicas
  • Y Qiu
  • J R D Copley
  • J S Gardner
  • C R Wiebe
چکیده

The distorted kagomé system Nd3Ga5SiO14 has been investigated with neutron scattering down to 0.046 K with no evidence of magnetic long range order of the Nd3+ moments in a zero field. Substantial diffuse scattering is observed which is in agreement with nearest-neighbor correlations between the fluctuating spins. Upon the application of a field in the c direction, the diffuse scattering is reduced in intensity while the magnetic Bragg peaks grow in intensity to saturate by 1 T to 1/2 of the expected magnetization. These measurements suggest that a unique spin-liquid state develops in Nd3Ga5SiO14 with a frustration index of f approximately |theta|/T_{C}> or =1300.

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عنوان ژورنال:
  • Physical review letters

دوره 99 23  شماره 

صفحات  -

تاریخ انتشار 2007