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DOI | 10.1126/science.abd4607 |
Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide | |
Xiaolong Liu; Yi Xue Chong; Rahul Sharma; J. C. Séamus Davis | |
2021-06-25 | |
发表期刊 | Science |
出版年 | 2021 |
英文摘要 | Among the most intriguing of the many phases of cuprate superconductors is the so-called pair density wave (PDW) state. PDW is characterized by a spatially modulated density of Cooper pairs and can be detected with a scanning tunneling microscope equipped with a superconducting tip. Liu et al. used Josephson tunneling microscopy, modified for the task, to detect PDW in niobium diselenide, a superconductor with a layered hexagonal structure. The PDW state is expected to appear in other transition metal dichalcogenides as well.
Science , abd4607, this issue p. [1447][1]
Pair density wave (PDW) states are defined by a spatially modulating superconductive order parameter. To search for such states in transition-metal dichalcogenides (TMDs), we used high-speed atomic-resolution scanned Josephson-tunneling microscopy. We detected a PDW state whose electron-pair density and energy gap modulate spatially at the wave vectors of the preexisting charge density wave (CDW) state. The PDW couples linearly to both the s -wave superconductor and the CDW and exhibits commensurate domains with discommensuration phase slips at the boundaries, conforming those of the lattice-locked commensurate CDW. Nevertheless, we found a global |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/334146 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Xiaolong Liu,Yi Xue Chong,Rahul Sharma,et al. Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide[J]. Science,2021. |
APA | Xiaolong Liu,Yi Xue Chong,Rahul Sharma,&J. C. Séamus Davis.(2021).Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide.Science. |
MLA | Xiaolong Liu,et al."Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide".Science (2021). |
条目包含的文件 | 条目无相关文件。 |
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