凝聚态物理
范德瓦尔斯力
散射
超导电性
莫特跃迁
自旋(空气动力学)
电阻率和电导率
Atom(片上系统)
材料科学
纳米尺度
物理
化学
纳米技术
赫巴德模型
量子力学
分子
热力学
嵌入式系统
计算机科学
作者
Aifeng Wang,Lijun Wu,Qiang Du,Muntaser Naamneh,W. H. Brito,A. M. Milinda Abeykoon,Wojciech R. Pudełko,Jasmin Jandke,Yu Liu,N. C. Plumb,Gabriel Kotliar,Vladimir Dobrosavljević,M. Radović,Yimei Zhu,C. Petrović
出处
期刊:Nano Letters
[American Chemical Society]
日期:2022-08-17
卷期号:22 (17): 6900-6906
被引量:1
标识
DOI:10.1021/acs.nanolett.2c01282
摘要
Nanoscale inhomogeneity can profoundly impact properties of two-dimensional van der Waals materials. Here, we reveal how sulfur substitution on the selenium atomic sites in Fe1-ySe1-xSx (0 ≤ x ≤ 1, y ≤ 0.1) causes Fe-Ch (Ch = Se, S) bond length differences and strong disorder for 0.4 ≤ x ≤ 0.8. There, the superconducting transition temperature Tc is suppressed and disorder-related scattering is enhanced. The high-temperature metallic resistivity in the presence of strong disorder exceeds the Mott limit and provides an example of the violation of Matthiessen's rule and the Mooij law, a dominant effect when adding moderate disorder past the Drude/Matthiessen's regime in all materials. The scattering mechanism responsible for the resistivity above the Mott limit is unrelated to phonons and arises for strong Se/S atom disorder in the tetrahedral surrounding of Fe. Our findings shed light on the intricate connection between the nanostructural details and the unconventional scattering mechanism, which is possibly related to charge-nematic or magnetic spin fluctuations.
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