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Interplay between charge density wave order and magnetic field in the nonmagnetic rare-earth tritellurideLaTe3
Physical Review B ( IF 3.2 ) Pub Date : 2021-10-25 , DOI: 10.1103/physrevb.104.155147
Arnab Pariari 1, 2 , Sudipta Koley 3 , Shubhankar Roy 1, 2 , Ratnadwip Singha 1, 2, 4 , Mukul S. Laad 2, 5 , A. Taraphder 6, 7 , Prabhat Mandal 1, 2
Affiliation  

Charge density wave (CDW) states in solids bear an intimate connection to underlying fermiology. Thus, modification of the latter by suitable perturbations provides an attractive handle to unearth CDW states. Here, we combine extensive magnetotransport experiments and first-principles correlated electronic structure calculations on nonmagnetic tritelluride LaTe3 to uncover phenomena rare in CDW systems: (i) a humplike feature in temperature dependence of resistivity at low temperatures under application of magnetic-field (B), which moves to higher temperatures with increasing B, (ii) highly anisotropic large transverse magnetoresistance (MR) upon rotation of B about the current parallel to the crystallographic c axis, (iii) anomalously large positive MR with spikelike peaks at characteristic angles when the angle between current and field is varied on the bc plane, (iv) extreme sensitivity of the angular variation of MR on field and temperature. These observations find a comprehensive explication in theoretical picture that captures field-induced electronic structure modification in LaTe3.

中文翻译:

非磁性稀土碲化物LaTe3中电荷密度波序与磁场的相互作用

固体中的电荷密度波 (CDW) 状态与潜在的费米学密切相关。因此,通过适当的扰动对后者的修改为挖掘 CDW 状态提供了一个有吸引力的处理。在这里,我们结合了广泛的磁传输实验和非磁性碲化物的第一性原理相关电子结构计算晚了3 揭示 CDW 系统中罕见的现象:(i)在施加磁场的情况下,低温下电阻率的温度依赖性的驼峰状特征(),随着温度的升高,温度升高 , (ii) 旋转后的高各向异性大横向磁阻 (MR) 关于平行于晶体的电流 C 轴,(iii) 异常大的正 MR,当电流和场之间的角度在 C平面,(iv) MR 的角度变化对场和温度的极端敏感性。这些观察结果在理论图片中找到了全面的解释,该图片捕获了场诱导的电子结构修改晚了3.
更新日期:2021-10-25
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