Understanding paramagnetic spin correlations in the spin-liquid pyrochlore Tb2Ti2O7

[摘要] Recent elastic and inelastic neutron scattering studies of the highly frustrated pyrochlore antiferromagnet Tb2Ti2O7 have shown some very intriguing features that cannot be modeled by the local <111> classical Ising model, naively expected to describe this system at low temperatures. By including single-ion excitations from the ground state doublet to higher crystal field levels, we successfully describe the elastic neutron scattering pattern and dispersion relations in Tb2Ti2O7, quantitatively consistent with experimental observations.

[发布日期] 2003-11-01

[关键词] ANTIFERROMAGNET TB2TI2O7;ICE;FRUSTRATION;SCATTERING;HO2TI2O7;CRYSTAL;MAGNETS;STATE