Thermodynamic properties of Yb2Ti2O7 pyrochlore as a function of temperature and magnetic field: Validation of a quantum spin ice exchange Hamiltonian

The thermodynamic properties of the pyrochlore Yb2Ti2O7 material are calculated using the numerical linked-cluster calculation method for an effective anisotropic-exchange spin-12 Hamiltonian with parameters recently determined by fitting the neutron scattering spin-wave data obtained at high magnetic field. Magnetization M(T,h) as a function of temperature T and for different magnetic fields h applied along the three high-symmetry directions …