Weyl magnons in pyrochlore antiferromagnets with an all-in-all-out order
Weyl magnons in pyrochlore antiferromagnets with an all-in-all-out order
复制标题
烧绿石反铁磁体中的韦尔磁振子具有全进全出的顺序
DOI:
10.1103/physrevb.97.115162
复制
发表时间:
2017-08
影响因子:
3.7
通讯作者:
Wenxing Nie
中科院分区:
文献类型:
--
作者:
Shao-Kai Jian;Wenxing Nie
We investigate novel topological magnon band crossings of pyrochlore antiferromagnets with all-in-all-out (AIAO) magnetic order. By general symmetry analysis and spin-wave theory, we show that pyrochlore materials with AIAO orders can host Weyl magnons under external magnetic fields or uniaxial strains. Under a small magnetic field, the magnon bands of the pyrochlore with AIAO background can feature two opposite-charged Weyl points, which is the minimal number of Weyl points realizable in quantum materials and has not be experimentally observed so far. We further show that breathing pyrochlores with AIAO orders can exhibit Weyl magnons upon uniaxial strains. These findings apply to any pyrochlore material supporting AIAO orders, irrespective of the forms of interactions. Specifically, we show that the Weyl magnons are robust against direct (positive) Dzyaloshinskii-Moriya interactions. Because of the ubiquitous AIAO orders in pyrochlore magnets including R$_2$Ir$_2$O$_7$, and experimentally achievable external strain and magnetic field, our predictions provide promising arena to witness the Weyl magnons in quantum magnets.
登录
查看更多内容
影响因子:
3.7
作者:
A. Zyuzin;A. Burkov
通讯作者:
A. Zyuzin;A. Burkov
DOI:
--
发表时间:
2011
期刊:
--
影响因子:
--
作者:
Xiangang Wan;Ari M. Turner;A. Vishwanath
通讯作者:
Xiangang Wan;Ari M. Turner;A. Vishwanath
影响因子:
56.9
作者:
Xu, Su-Yang;Belopolski, Ilya;Hasan, M. Zahid
通讯作者:
Hasan, M. Zahid
影响因子:
3.7
作者:
Lifa Zhang;Jie Ren;Jian-Sheng Wang;Baowen Li
通讯作者:
Lifa Zhang;Jie Ren;Jian-Sheng Wang;Baowen Li
影响因子:
1.4
作者:
Hosur, Pavan;Qi, Xiaoliang
通讯作者:
Qi, Xiaoliang