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Title: Theoretical Discovery of a Superconducting Two-Dimensional Metal–Organic Framework

Abstract

Superconductivity is an interesting 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. In this work, we report on 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 (Tc) of 4.43 K, while Tc of bulk Cu-BHT is 1.58 K. Different from the enhanced Tc in 2D inorganic SCs which is induced by interfacial effects, the Tc 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.

Authors:
 [1];  [2];  [3];  [4]; ORCiD logo [5]
  1. Shandong Univ., Jinan (China); Univ. of Utah, Salt Lake City, UT (United States); Tsinghua Univ., Beijing (China)
  2. Univ. of Utah, Salt Lake City, UT (United States)
  3. Shandong Univ., Jinan (China); Univ. of Utah, Salt Lake City, UT (United States)
  4. Shandong Univ., Jinan (China)
  5. Univ. of Utah, Salt Lake City, UT (United States); Collaborative Innovation Center of Quantum Matter, Beijing (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC)
OSTI Identifier:
1484738
Grant/Contract Number:  
FG02-04ER46148
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 17; Journal Issue: 10; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Superconductivity; metal−organic framework; enhanced critical temperature; first-principles calculations

Citation Formats

Zhang, Xiaoming, Zhou, Yinong, Cui, Bin, Zhao, Mingwen, and Liu, Feng. Theoretical Discovery of a Superconducting Two-Dimensional Metal–Organic Framework. United States: N. p., 2017. Web. doi:10.1021/acs.nanolett.7b02795.
Zhang, Xiaoming, Zhou, Yinong, Cui, Bin, Zhao, Mingwen, & Liu, Feng. Theoretical Discovery of a Superconducting Two-Dimensional Metal–Organic Framework. United States. https://doi.org/10.1021/acs.nanolett.7b02795
Zhang, Xiaoming, Zhou, Yinong, Cui, Bin, Zhao, Mingwen, and Liu, Feng. Tue . "Theoretical Discovery of a Superconducting Two-Dimensional Metal–Organic Framework". United States. https://doi.org/10.1021/acs.nanolett.7b02795. https://www.osti.gov/servlets/purl/1484738.
@article{osti_1484738,
title = {Theoretical Discovery of a Superconducting Two-Dimensional Metal–Organic Framework},
author = {Zhang, Xiaoming and Zhou, Yinong and Cui, Bin and Zhao, Mingwen and Liu, Feng},
abstractNote = {Superconductivity is an interesting 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. In this work, we report on 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 (Tc) of 4.43 K, while Tc of bulk Cu-BHT is 1.58 K. Different from the enhanced Tc in 2D inorganic SCs which is induced by interfacial effects, the Tc 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.},
doi = {10.1021/acs.nanolett.7b02795},
journal = {Nano Letters},
number = 10,
volume = 17,
place = {United States},
year = {Tue Sep 12 00:00:00 EDT 2017},
month = {Tue Sep 12 00:00:00 EDT 2017}
}

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