摘要
We investigate the uniaxial-pressure dependence of resistivity for URu_(2−x)Fe_(x)Si_(2)samples with x=0 and 0.2,which host a hidden order(HO)and a large-moment antiferromagnetic(LMAFM)phase,respectively.For both samples,the elastoresistivityζshows a seemingly divergent behavior above the transition temperature T_(0)and a quick decrease below it.We find that the temperature dependence ofζfor both samples can be well described by assuming the uniaxial pressure effect on the gap or certain energy scale except forζ(110)of the x=0 sample,which exhibits a nonzero residual value at 0 K.We show that this provides a qualitative difference between the HO and LMAFM phases.Our results suggest that there is an in-plane anisotropic response to the uniaxial pressure that only exists in the hidden order state without necessarily breaking the rotational lattice symmetry.
作者
王兴玉
龚冬良
刘波
马肖燕
赵金瑜
王鹏玉
盛玉韬
郭静
孙力玲
张文
赖新春
谭世勇
杨义峰
李世亮
Xingyu Wang;Dongliang Gong;Bo Liu;Xiaoyan Ma;Jinyu Zhao;Pengyu Wang;Yutao Sheng;Jing Guo;Liling Sun;Wen Zhang;Xinchun Lai;Shiyong Tan;Yi-feng Yang;Shiliang Li(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;Science and Technology on Surface Physics and Chemistry Laboratory,Mianyang 621908,China)
基金
supported by the National Key Research and Development Program of China(Grant Nos.2020YFA0406003,2021YFA1400401,2017YFA0302903,and 2017YFA0303100)
the National Natural Science Foundation of China(Grant Nos.11961160699,11874401,and 11974397)
the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(Grant Nos.XDB33000000 and XDB25000000)
the K.C.Wong Education Foundation(Grant No.GJTD2020-01).
