Clean 2D superconductivity in a bulk van der Waals superlattice

doi:10.1126/science.aaz6643

GSTDTAP > 气候变化

DOI	10.1126/science.aaz6643
	Clean 2D superconductivity in a bulk van der Waals superlattice
	A. Devarakonda; H. Inoue; S. Fang; C. Ozsoy-Keskinbora; T. Suzuki; M. Kriener; L. Fu; E. Kaxiras; D. C. Bell; J. G. Checkelsky
	2020-10-09
发表期刊	Science
出版年	2020
英文摘要	Single layers of transition metal dichalcogenides exhibit exotic properties, including superconductivity. The usual route to obtaining such samples is to exfoliate a three-dimensional (3D) crystal. Devarakonda et al. instead grew a superlattice comprising alternating layers of the transition metal dichalcogenide hexagonal NbS2 and the material Ba3NbS5 (see the Perspective by Schoop). The inert Ba3NbS5 layers serve to dissociate the superconducting NbS2 layers from one another, resulting in 2D superconductivity with high carrier mobility. The combination of high mobility and reduced dimensionality may give rise to exotic quantum phases. Science , this issue p. [231][1] see also p. [170][2] Advances in low-dimensional superconductivity are often realized through improvements in material quality. Apart from a small group of organic materials, there is a near absence of clean-limit two-dimensional (2D) superconductors, which presents an impediment to the pursuit of numerous long-standing predictions for exotic superconductivity with fragile pairing symmetries. We developed a bulk superlattice consisting of the transition metal dichalcogenide (TMD) superconductor 2 H -niobium disulfide (2 H -NbS2) and a commensurate block layer that yields enhanced two-dimensionality, high electronic quality, and clean-limit inorganic 2D superconductivity. The structure of this material may naturally be extended to generate a distinct family of 2D superconductors, topological insulators, and excitonic systems based on TMDs with improved material properties. [1]: /lookup/doi/10.1126/science.aaz6643 [2]: /lookup/doi/10.1126/science.abd4225
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/298104
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	A. Devarakonda,H. Inoue,S. Fang,et al. Clean 2D superconductivity in a bulk van der Waals superlattice[J]. Science,2020.
APA	A. Devarakonda.,H. Inoue.,S. Fang.,C. Ozsoy-Keskinbora.,T. Suzuki.,...&J. G. Checkelsky.(2020).Clean 2D superconductivity in a bulk van der Waals superlattice.Science.
MLA	A. Devarakonda,et al."Clean 2D superconductivity in a bulk van der Waals superlattice".Science (2020).