In-plane anisotropic response to the uniaxial pressure in the hidden order state of URu$_2$Si$_2$
| Autor: | Wang, Xingyu, Gong, Dongliang, Liu, Bo, Ma, Xiaoyan, Zhao, Jinyu, Wang, Pengyu, Sheng, Yutao, Guo, Jing, Sun, Liling, Zhang, Wen, Lai, Xinchun, Tan, Shiyong, Yang, Yi-feng, Li, Shiliang |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0256-307X/39/10/107101 |
| Popis: | We studied the uniaxial-pressure dependence of the 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 elastoresistivity $\zeta$ shows a seemingly divergent behavior above the transition temperature $T_0$ and a quick decrease below it. We found that the temperature dependence of $\zeta$ for both samples can be well described by assuming the uniaxial pressure effect on the gap or certain energy scale except for $\zeta_{(110)}$ of the $x$ = 0 sample, which exhibits a non-zero 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. Comment: 6 pages, 3 figures |
| Databáze: | arXiv |
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