The tetragonal heavy-fermion compound CeAuSb$_2$ (space group $P4/nmm$) exhibits incommensurate spin density wave (SDW) order below $T_{N}\approx6.5~K$ with the propagation vector $\mathbf{q}_A = (δ_A,δ_A,1/2)$. The application of uniaxial stress along the [010] direction induces a sudden change in the resistivity ratio $ρ_a/ρ_b$ at a compressive strain of $ε\approx -0.5$\%. Here we use neutron scattering to show that the uniaxial stress induces a first-order transition to a SDW state with a different propagation vector $(0,δ_B,1/2)$ with $δ_B=0.25$. The magnetic structure of the new (B) phase consists of Ce layers with ordered moments alternating with layers with zero moment stacked along the $c$-axis. The ordered layers have an up-up-down-down configuration along the $b$-axis. This is an unusual situation in which the loss of spatial inversion is driven by the magnetic order. We argue that the change in SDW wavevector leads to Fermi surface reconstruction and a concomitant change in the transport properties.
Evidence for realignment of the charge density wave state in ErTe$_3$ and TmTe$_3$ under uniaxial stress via elastocaloric and elastoresistivity measurements
我们报道了准二维稀土碲化物（$R$ Te $_3$，其中$R$ =Er，Tm）中电荷密度波（CDW）态随面内单轴应力的演化.测量的弹热效应，电阻率，和elastoresistance，使我们能够证明在面内反对称应变的CDW的重要性，并建立一个相图。我们发现，适度的拉伸应力平行于平面内的$a$轴可以可逆地切换两个平面内方向之间的有序波矢量的方向。这项工作建立了$R$ Te $_3$作为一个有前途的模型系统的研究在准二维正方形晶格的应变CDW相互作用。
Uniaxial stress effect on the quasi-one-dimensional Kondo lattice CeCo$_2$Ga$_8$
准一维极限中的量子临界现象仍然是一个悬而未决的问题。通过电输运和交流热容测量，研究了准一维近藤晶格CeCo $_2$ Ga $_8$的单轴应力效应.推测CeCo $_2$ Ga $_8$位于量子临界点的附近但在量子无序侧。在压缩平行于Ce-Ce链的${c}$轴时，增强了相干近藤效应的开始。相反，当链内距离通过沿{a}或{b}轴的压缩而延长时，电子比热在低温下更快速地发散。这些结果表明，拉伸链内应变（$\varepsilon_c >0$）推动CeCo $_2$ Ga $_8$更接近量子临界点，而压缩链内应变（$\varepsilon_c <0$）可能导致偏离。我们的工作提供了一个罕见的范例操纵附近的量子临界点的准一维Kondo晶格单轴应力，并铺平了道路，进一步研究的独特功能的量子临界准一维极限。
Uniaxial-Stress-Induced Magnetic Transitions in the Triangular-Lattice Antiferromagnet PdCrO2
Technische Universität Dresden（德累斯顿工业大学）；Max Planck Institute for Chemical Physics of Solids（马克斯·普朗克固体与高磁场研究化学物理研究所）；Rutherford Appleton Laboratory（卢瑟福阿普尔顿实验室）；Tohoku University（东北大学）；University of St. Andrews（圣安德鲁斯大学）；University of Birmingham（伯明翰大学）
Uniaxial stress effects on magnetic and electric properties of the ground state in a centrosymmetric magnetic skyrmion host Gd$_2$PdSi$_3$
Institute for Solid State Physics, The University of Tokyo（东京大学固体物理研究所）；J-PARC Center, Japan Atomic Energy Agency（日本原子能研究开发机构J-ARC中心）；RIKEN Center for Emergent Matter Science (CEMS)（理化学研究所新兴物质科学研究中心）；Institute of Materials Structure Science, High Energy Accelerator Research Organization（高能加速器研究机构物质结构科学研究所）
Uniaxial stress tuning of the anomalous Hall effect in Mn3Ge
Max Planck Institute for Chemical Physics of Solids（马克斯·普朗克固体化学物理研究所）；Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM)（巴西同步辐射光源实验室（LNLS），巴西能源与材料研究中心（CNPEM））；Center for Electronic Correlations and Magnetism (EKM)（电子关联与磁性中心（EKM））；Indian Institute of Technology - Delhi（印度理工学院德里分校）
Effect of Uniaxial Stress for Pressure-Induced Superconductor SrFe_2As_2
我们报道了单晶SrFe $_2$ As $_2$的压温相图容易受到传压介质流体静力学的影响。对于我们使用的所有三种介质，超导性与零电阻出现，伴随着反铁磁（正交）相的抑制，但临界压力$P_c$被发现依赖于介质的类型。在几乎流体静力学条件下，$P_c$估计为4.4 GPa，但使用在室温下已经固化的介质，其降低至$3.4-3.7$ GPa。建议沿c轴的单轴应力有助于抑制反铁磁（正交）相。本文还报道了BaFe $_2$ As $_2$的压力效应。
Quantum Oscillations of $\mathrm{Sr}_2\mathrm{RuO}_4$ under c-Axis Uniaxial Stress
Max Planck Institute for Chemical Physics of Solids（马克斯·普朗克固体化学物理研究所）；Scottish Universities Physics Alliance (SUPA), School of Physics and Astronomy, University of St Andrews（圣安德鲁斯大学物理与天文学学院苏格兰大学物理联盟）；National Institute for Materials Science（国立材料研究所）；Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院量子材料与技术研究所）
Effect of uniaxial stress on helimagnetic phases in the square-lattice itinerant magnet EuAl$_{4}$
Institute for Solid State Physics, University of Tokyo（东京大学固体物理研究所）；RIKEN Center for Emergent Matter Science (CEMS)（理化学研究所新兴物质科学中心）；Department of Physics, Tokyo Metropolitan University（东京都立大学物理学系）；Institute of Materials Structure Science, High Energy Accelerator Research Organization（高能加速器研究机构材料结构科学研究所）；Department of Advanced Materials Science, The University of Tokyo（东京大学先进材料科学系）；Research Center for Advanced Science and Technology, University of Tokyo（东京大学先进科学技术研究中心）；Department of Applied Physics, The University of Tokyo（东京大学应用物理学系）
In-plane anisotropy of the single-$q$ and multiple-$q$ ordered phases in the antiferromagnetic metal CeRh$_2$Si$_2$ unveiled by the bulk measurements under uniaxial stress and neutron scattering
