+44 (0)1509 263171
Please use this identifier to cite or link to this item:
|Title: ||Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet β-Li2IrO3|
|Authors: ||Ducatman, Samuel|
Perkins, Natalia B.
|Issue Date: ||2018|
|Publisher: ||© American Physical Society|
|Citation: ||DUCATMAN, S., ROUSOCHATZAKIS, I. and PERKINS, N.B., 2018. Magnetic structure and excitation spectrum of the hyperhoneycomb Kitaev magnet β-Li2IrO3. Physical Review B, 97: 125125.|
|Abstract: ||© 2018 American Physical Society. We present a theoretical study of the static and dynamical properties of the three-dimensional, hyperhoneycomb Kitaev magnet β-Li2IrO3. We argue that the observed incommensurate order can be understood in terms of a long-wavelength twisting of a nearby commensurate period-3 state, with the same key qualitatively features. The period-3 state shows very different structure when either the Kitaev interaction K or the off-diagonal exchange anisotropy Γ is dominant. A comparison of the associated static spin structure factors with reported scattering experiments in zero and finite fields gives strong evidence that β-Li2IrO3 lies in the regime of dominant Kitaev coupling, and that the Heisenberg exchange J is much weaker than both K and Γ. Our predictions for the magnon excitation spectra, the dynamical spin structure factors, and their polarization dependence provide additional distinctive fingerprints that can be checked experimentally.|
|Description: ||This paper was accepted for publication in the journal Physical Review B and the definitive published version is available at https://doi.org/10.1103/PhysRevB.97.125125|
|Version: ||Accepted for publication|
|Publisher Link: ||https://doi.org/10.1103/PhysRevB.97.125125|
|Appears in Collections:||Published Articles (Physics)|
Files associated with this item:
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.