期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Asymmetric ferromagnetic criticality in pyrochlore ferromagnet Lu2V2O7 被引量:1
1
作者 Na Su Feiye Li +7 位作者 Yuanyuan Jiao Ziyi Liu Jianping Suna Bosen Wang Yu Sui Haidong Zhou Gang Chen Jinguang Cheng 《Science Bulletin》 SCIE EI CSCD 2019年第17期1222-1227,共6页
We study the ferromagnetic criticality of the pyrochlore magnet Lu2 V2 O7 at the ferromagnetic transition TC% 70 K from the isotherms of magnetization MeHT via an iteration process and the Kouvel-Fisher method. The cr... We study the ferromagnetic criticality of the pyrochlore magnet Lu2 V2 O7 at the ferromagnetic transition TC% 70 K from the isotherms of magnetization MeHT via an iteration process and the Kouvel-Fisher method. The critical exponents associated with the transition are determined: b = 0.32(1), c = 1.41(1),and d ? 5:38. The validity of these critical exponents is further verified by scaling all the MeHT data in the vicinity of TConto two universal curves in the plot of M=jejbversus H=jejbtc, where e ? T=TCà 1.The obtained b and c values show asymmetric behaviors on the T < TCand the T > TCsides, and are consistent with the predicted values of 3 D Ising and cubic universality classes, respectively. This makes Lu2 V2 O7 a rare example in which the critical behaviors associated with a ferromagnetic transition belong to different universality classes. We describe the observed criticality from the Ginzburg-Landau theory with the quartic cubic anisotropy that microscopically originates from the anti-symmetric Dzyaloshinskii-Moriya interaction as revealed by recent magnon thermal Hall effect and theoretical investigations. 展开更多
关键词 lu2v2o7 PYROCHLORE FERROMAGNETIC transition Critical behavior GINZBURG-LANDAU analysis
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部