de Haas-van Alphen effect and the first-principles study of the possible topological stannide Cu3Sn
de Haas-van Alphen effect and the first-principles study of the possible topological stannide Cu3Sn
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德哈斯-范阿尔芬效应和可能的拓扑锡化物Cu3Sn的第一性原理研究
DOI：
10.1016/j.jallcom.2022.167017
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发表时间：
2022-09
影响因子：
6.2
通讯作者：
Wen-He Jiao
中科院分区：
文献类型：
--
作者：
Chengxu Liu;Bin Li;Yongheng Ge;Chuanying Xi;Yi Liu;Chunqiang Xu;Qi Lu;Yunlong Li;Hang-Qiang Qiu;Qin-Qing Zhu;Yu-Ke Li;Zhi Ren;Ziming Zhu;Dong Qian;Xianglin Ke;Xiaofeng Xu;Wen-He Jiao
寻找具有各种对称保护拓扑状态的量子材料一直是最近研究兴趣的焦点，主要是由于它们迷人的物理性质和潜在的技术实用性。在这项工作中，我们报告了磁输运，de Haas-van Alphen （dHvA）振荡，以及与最近报道的拓扑半金属Ag 3sn同构的锡化Cu 3sn的第一性原理计算。磁电阻在磁场中呈准线性变化。在2 K低至1特斯拉的电场下，观察到明显的dHvA振荡，振荡频率为F α = 8.74, F β = 150.19, F γ = 229.66，有效质量极小。对dHvA量子振荡的分析揭示了一个可能的非零Berry相位，暗示了非平凡带拓扑。非平凡电子拓扑的确证也来自第一性原理计算，该计算产生非零z2拓扑指数。这些结果共同表明，cu3sn，类似于它的同系物Ag 3sn，可能是另一种金属间锡化物承载拓扑狄拉克费米子。•合成了高质量的金属间cu3sn单晶，可用于无铅焊接，并有可能用于替代锂离子电池的石墨阳极。从理论上和实验上首次揭示了其拓扑性质。•我们报道了层状锡化物Cu 3sn的异常磁输运、量子de Haas-van Alphen振荡和第一性原理计算。•通过多种技术，我们为该锡化物中拓扑载流子的存在提供了热力学和计算证据，这可能为应用和基础兴趣的平等衡量提供了一个肥沃的平台。
The search for quantum materials with various symmetry-protected topological states has been the focus of recent research interest, primarily due to their fascinating physical properties and the potential technological utility. In this work, we report on the magnetotransport, de Haas-van Alphen (dHvA) oscillations, and the first-principles calculations of the stannide Cu 3 Sn that is isostructural with the recently reported topological semimetal Ag 3 Sn. The magnetoresistance was found to vary quasi-linearly in field. Clear dHvA oscillations were observed under a field as low as 1 Tesla at 2 K, with three major oscillation frequencies F α = 8.74▒T, F β = 150.19▒T and F γ = 229.66▒T and extremely small effective masses. The analysis of dHvA quantum oscillations revealed a possible nonzero Berry phase, suggestive of the nontrivial band topology. The corroborating evidence for the nontrivial electronic topology also comes from the first-principles calculations which yield a nonzero Z 2 topological index. These results collectively suggest that Cu 3 Sn, in analogy to its homologue Ag 3 Sn, may be another intermetallic stannide hosting topological Dirac fermions. • The high-quality single crystals of the intermetallic Cu 3 Sn that can be utilized in the lead-free soldering and potentially used to substitute the graphite anodes of Lithium ion batteries, are synthesized. The topological properties have been revealed for the first time, both experimentally and theoretically. • We report on the anomalous magnetotransport, quantum de Haas-van Alphen oscillations, and the first-principles calculations of the layered stannide Cu 3 Sn. • By multiple techniques, we provide the thermodynamic and computational evidence for the existence of topological carriers in this stannide, which may offer a fertile platform that is in equal measure of applied and fundamental interest.
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影响因子：
0.8
作者：
W. Burkhardt;K. Schubert
通讯作者：
W. Burkhardt;K. Schubert
影响因子：
3.7
作者：
Kumar, Nitesh;Guin, Satya N.;Shekhar, Chandra
通讯作者：
Shekhar, Chandra
DOI：
10.1107/s0365110x56002990
发表时间：
1956-12
期刊：
Acta Crystallographica
影响因子：
--
作者：
H. Hendus;H. Knödler
通讯作者：
H. Hendus;H. Knödler
影响因子：
16.6
作者：
通讯作者：
--
影响因子：
3.7
作者：
Hu, Jin;Tang, Zhijie;Mao, Zhiqiang
通讯作者：
Mao, Zhiqiang