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Dominant Charge Density Order in TaTe4
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-12 , DOI: 10.1103/physrevlett.133.116403 Hongtao Rong 1, 2 , Qiangqiang Gu 3, 4 , Xue Yang 5 , Yihao Lin 3 , Chengcheng Zhang 1 , Yuan Wang 1 , Ruixin Guo 1 , Zhanyang Hao 1 , Yongqing Cai 1 , Fayuan Zhang 1 , Zhicheng Jiang 6, 7 , Yichen Yang 6, 7 , Qi Jiang 6, 7 , Zhengtai Liu 6, 7 , Mao Ye 6, 7 , Shu Guo 1 , Le Wang 1 , Junhao Lin 1 , Li Lu 5, 8 , Guangtong Liu 5, 8 , Ji Feng 3, 8 , Chaoyu Chen 1, 9
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-12 , DOI: 10.1103/physrevlett.133.116403 Hongtao Rong 1, 2 , Qiangqiang Gu 3, 4 , Xue Yang 5 , Yihao Lin 3 , Chengcheng Zhang 1 , Yuan Wang 1 , Ruixin Guo 1 , Zhanyang Hao 1 , Yongqing Cai 1 , Fayuan Zhang 1 , Zhicheng Jiang 6, 7 , Yichen Yang 6, 7 , Qi Jiang 6, 7 , Zhengtai Liu 6, 7 , Mao Ye 6, 7 , Shu Guo 1 , Le Wang 1 , Junhao Lin 1 , Li Lu 5, 8 , Guangtong Liu 5, 8 , Ji Feng 3, 8 , Chaoyu Chen 1, 9
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Electronic orders such as charge density wave (CDW) and superconductivity raise exotic physics and phenomena as evidenced in recently discovered kagome superconductors and transition metal chalcogenides. In most materials, CDW induces a weak, perturbative effect, manifested as shadow bands, minigaps, resistivity kinks, etc. Here we demonstrate a unique example—transition metal tetratellurides , in which the CDW order dominates the electronic structure and transport properties. Using angle-resolved photoemission spectroscopy, we found that the band structure of CDW is characterized by small, bulk electron pockets. Density functional theory analyses reveal their CDW origin from the folding of the original, large Fermi pockets. Importantly, the CDW induced pockets result in prominent frequencies in the quantum oscillation of the magnetoresistance. Satisfactory agreements are reached between results from photoemission spectroscopy, density functional theory, and quantum oscillation, concerning the shape, size, location, and angle dependence of the CDW pockets. Our results underline transition metal tetratellurides as an outstanding example for exploring the interplay between CDW, pressure induced superconductivity, and potential topological states under strong field.
中文翻译：
TaTe4 中的主电荷密度顺序
电荷密度波（CDW）和超导等电子秩序引发了奇异的物理和现象，最近发现的戈薇超导体和过渡金属硫属化物就证明了这一点。在大多数材料中，CDW 会产生微弱的微扰效应，表现为阴影带、小间隙、电阻率扭结等。这里我们展示一个独特的例子——过渡金属四碲化物 ，其中 CDW 顺序主导电子结构和输运特性。利用角分辨光电子能谱，我们发现 CDW 的能带结构 其特点是小而大的电子袋。密度泛函理论分析揭示了它们的 CDW 起源于原始大费米口袋的折叠。重要的是，CDW 引起的口袋导致磁阻量子振荡的显着频率。关于 CDW 口袋的形状、大小、位置和角度依赖性，光电发射光谱、密度泛函理论和量子振荡的结果之间达成了令人满意的协议。我们的结果强调过渡金属四碲化物是探索 CDW、压力诱导超导性和强场下潜在拓扑态之间相互作用的杰出例子。
更新日期：2024-09-12
中文翻译：
TaTe4 中的主电荷密度顺序
电荷密度波（CDW）和超导等电子秩序引发了奇异的物理和现象，最近发现的戈薇超导体和过渡金属硫属化物就证明了这一点。在大多数材料中，CDW 会产生微弱的微扰效应，表现为阴影带、小间隙、电阻率扭结等。这里我们展示一个独特的例子——过渡金属四碲化物 ，其中 CDW 顺序主导电子结构和输运特性。利用角分辨光电子能谱，我们发现 CDW 的能带结构 其特点是小而大的电子袋。密度泛函理论分析揭示了它们的 CDW 起源于原始大费米口袋的折叠。重要的是，CDW 引起的口袋导致磁阻量子振荡的显着频率。关于 CDW 口袋的形状、大小、位置和角度依赖性，光电发射光谱、密度泛函理论和量子振荡的结果之间达成了令人满意的协议。我们的结果强调过渡金属四碲化物是探索 CDW、压力诱导超导性和强场下潜在拓扑态之间相互作用的杰出例子。
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