Exciton-phonon damping in the two and three-dimensional anisotropic XY model

The effect of exciton-phonon interaction on spin transport properties and quantum information is analysed in the integer spin XY model with ion-single anisotropy in dimension d=2,3 in the square and cubic lattices and in the neighbourhood of a quantum critical point D_c using the SU(3) Schwinger boson approach. For three dimensions, there is a quantum phase transition from the Nèel phase to paramagnetic phase where recently, one has investigated the influence of this quantum phase transition on spin transport and obtained a strong influence of the line of separation among the phases on continuum spin conductivity.




Keywords:
spin transport, quantum entanglement, spin-phonon

Bibliography
[1] Hang-Ting Wang, Yupeng Wang, Phys. Rev. B 71, (2005) 104429.
[2] N. Papanicolaou, Nuclear Phys. B 305, 367 (1988).
[3] L. S. Lima, Solid State Commun. 248, 115 (2016).
[4] L . S. Lima, Solid State Commun. 295, 1 (2019).
[4] Leonardo S. Lima, Eur. Phys. J. D 73 , 6 (2019).