Pyrochlore magnets can be a unique platformn to demonstrate numerous important concepts and appli-cations of frustrated magnetic physics in modern condensed matter physics.Most works on pyrochlore magnets deal with th...Pyrochlore magnets can be a unique platformn to demonstrate numerous important concepts and appli-cations of frustrated magnetic physics in modern condensed matter physics.Most works on pyrochlore magnets deal with the interacting spin-1/2 local moments,while much less works have studied the spin-1 systems.We here review the physics with interacting spin-1 local moments on the pyrochlore lattice to ilustrate the potentially interesting physics associated with spin-1 magnets.The generic pyrochlore spin-1 model includes the antiferromagnetic Heisenberg interaction,the Dzyaloshinski-Moriya interaction and the single ion spin anisotropy.The global phase diagram of this generic spin model is reviewed,and the relation between different quantum phases in the phase diagram is clari-fied.The critical properties of the transition from the parent quantum paramagnet to the proximate orders are discussed.The presence of quantum order by disorder in the parts of the ordered phases is analyzed.The elementary excitations with respect to the ground states are further reviewed,and the topological natures of these excitations are carefully addressed.The materials'relevance of the spin-1 pyrochlore magnets are finally reviewed.This review may provide insights about the interesting spin-1 local moments on frustrated systems.展开更多
基金This work was supported by the Ministry of Science and Technology of China with grant Nos.2016YFA0301001,2016YFA0300501,and 2018YFE0103200the General Research Fund(GRF)under grant No.17303819 from the Research Grant Council of Hong Kong.
文摘Pyrochlore magnets can be a unique platformn to demonstrate numerous important concepts and appli-cations of frustrated magnetic physics in modern condensed matter physics.Most works on pyrochlore magnets deal with the interacting spin-1/2 local moments,while much less works have studied the spin-1 systems.We here review the physics with interacting spin-1 local moments on the pyrochlore lattice to ilustrate the potentially interesting physics associated with spin-1 magnets.The generic pyrochlore spin-1 model includes the antiferromagnetic Heisenberg interaction,the Dzyaloshinski-Moriya interaction and the single ion spin anisotropy.The global phase diagram of this generic spin model is reviewed,and the relation between different quantum phases in the phase diagram is clari-fied.The critical properties of the transition from the parent quantum paramagnet to the proximate orders are discussed.The presence of quantum order by disorder in the parts of the ordered phases is analyzed.The elementary excitations with respect to the ground states are further reviewed,and the topological natures of these excitations are carefully addressed.The materials'relevance of the spin-1 pyrochlore magnets are finally reviewed.This review may provide insights about the interesting spin-1 local moments on frustrated systems.
