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Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon

We here predict by ab initio calculations phonon-mediated high-T (c) superconductivity in hole-doped diamond-like cubic crystalline hydrocarbon K (4)-CH (space group I2(1)/3). This material possesses three key properties: (i) an all-sp (3) covalent carbon framework that produces high-frequency phono...

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Autores principales: Lian, Chao-Sheng, Wang, Jian-Tao, Duan, Wenhui, Chen, Changfeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5431101/
https://www.ncbi.nlm.nih.gov/pubmed/28469256
http://dx.doi.org/10.1038/s41598-017-01541-6
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author Lian, Chao-Sheng
Wang, Jian-Tao
Duan, Wenhui
Chen, Changfeng
author_facet Lian, Chao-Sheng
Wang, Jian-Tao
Duan, Wenhui
Chen, Changfeng
author_sort Lian, Chao-Sheng
collection PubMed
description We here predict by ab initio calculations phonon-mediated high-T (c) superconductivity in hole-doped diamond-like cubic crystalline hydrocarbon K (4)-CH (space group I2(1)/3). This material possesses three key properties: (i) an all-sp (3) covalent carbon framework that produces high-frequency phonon modes, (ii) a steep-rising electronic density of states near the top of the valence band, and (iii) a Fermi level that lies in the σ-band, allowing for a strong coupling with the C-C bond-stretching modes. The simultaneous presence of these properties generates remarkably high superconducting transition temperatures above 80 K at an experimentally accessible hole doping level of only a few percent. These results identify a new extraordinary electron-phonon superconductor and pave the way for further exploration of this novel superconducting covalent metal.
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spelling pubmed-54311012017-05-16 Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon Lian, Chao-Sheng Wang, Jian-Tao Duan, Wenhui Chen, Changfeng Sci Rep Article We here predict by ab initio calculations phonon-mediated high-T (c) superconductivity in hole-doped diamond-like cubic crystalline hydrocarbon K (4)-CH (space group I2(1)/3). This material possesses three key properties: (i) an all-sp (3) covalent carbon framework that produces high-frequency phonon modes, (ii) a steep-rising electronic density of states near the top of the valence band, and (iii) a Fermi level that lies in the σ-band, allowing for a strong coupling with the C-C bond-stretching modes. The simultaneous presence of these properties generates remarkably high superconducting transition temperatures above 80 K at an experimentally accessible hole doping level of only a few percent. These results identify a new extraordinary electron-phonon superconductor and pave the way for further exploration of this novel superconducting covalent metal. Nature Publishing Group UK 2017-05-03 /pmc/articles/PMC5431101/ /pubmed/28469256 http://dx.doi.org/10.1038/s41598-017-01541-6 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lian, Chao-Sheng
Wang, Jian-Tao
Duan, Wenhui
Chen, Changfeng
Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title_full Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title_fullStr Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title_full_unstemmed Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title_short Phonon-mediated high-T(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
title_sort phonon-mediated high-t(c) superconductivity in hole-doped diamond-like crystalline hydrocarbon
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5431101/
https://www.ncbi.nlm.nih.gov/pubmed/28469256
http://dx.doi.org/10.1038/s41598-017-01541-6
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