期刊
NANO LETTERS
卷 17, 期 10, 页码 6166-6170出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b02795
关键词
Superconductivity; metal-organic framework; enhanced critical temperature; first-principles calculations
类别
资金
- DOE-BES [DE-FG02-04ER46148]
- National Natural Science Foundation of China [21433006, 11774201]
- National Key Research and Development Program of China [2016YFA0301200]
- China Scholarship Council [201506220046]
Superconductivity is a fascinating quantum phenomenon characterized by zero electrical resistance and the Meissner effect. To date, several distinct families of superconductors (SCs) have been discovered. These include three-dimensional (3D) bulk SCs in both inorganic and organic materials as well as two-dimensional (2D) thin film SCs but only in inorganic materials. Here we predict superconductivity in 2D and 3D organic metal organic frameworks by using first-principles calculations. We show that the highly conductive and recently synthesized Cu-benzenehexathial (BHT) is a Bardeen-Cooper-Schrieffer SC. Remarkably, the monolayer Cu-BHT has a critical temperature (T-c) of 4.43 K, while T-c of bulk Cu-BHT is 1.58 K. Different from the enhanced T-c in 2D inorganic SCs which is induced by Interfacial effects, the T-c enhancement in this 2D organic SC is revealed to be the out-of-plane soft-mode vibrations, analogous to surface mode enhancement originally proposed by Ginzburg. Our findings not only shed new light on better understanding 2D superconductivity but also open a new direction to search for SCs by interface engineering with organic materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据