Spin-glass state and reversed magnetic anisotropy induced by Cr doping in the Kitaev magnet α−RuCl3

  title={Spin-glass state and reversed magnetic anisotropy induced by Cr doping in the Kitaev magnet 
  author={G{\"a}el Bastien and M. Roslova and Mukesh K. Mehlawat and Jens Hunger and Anna Isaeva and Thomas Doert and Matthias Vojta and Bernd Buchner and Anja U. B. Wolter},
  journal={Physical Review B},
In the presence of strong spin-orbit coupling, honeycomb-layered magnetic materials host a particular type of magnetic interactions known as Kitaev interactions. These are predicted to lead to a topological quantum spin liquid ground state. The material $\ensuremath{\alpha}$-RuCl${}_{3}$ is considered to be close to this Kitaev spin liquid state. Here, the authors discuss the effect of the partial substitution of ruthenium ions in $\ensuremath{\alpha}$-RuCl${}_{3}$ by magnetic chromium ions… 

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Layered α-RuCl3 is a promising material to potentially realize the long-sought Kitaev quantum spin liquid with fractionalized excitations. While evidence of this state has been reported under a

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Neutron scattering in the proximate quantum spin liquid α-RuCl3

A comprehensive inelastic neutron scattering study of single crystals of the material α-RuCl3, which has been predicted to a host a Kitaev spin liquid, finds highly unusual signals, including a column of scattering over a large energy interval around the Brillouin zone center, which is consistent with scattering from the Majorana excitations of a KQSL.

Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid

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The excitation spectrum of α-RuCl3 is proposed as a prime candidate for fractionalized Kitaev physics, and dynamical response measurements above interlayer energy scales are naturally accounted for in terms of deconfinement physics expected for QSLs.

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