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Title: Phonon-mediated high-T c superconductivity in hole-doped diamond-like crystalline hydrocarbon

Abstract

We here predict by ab initio calculations phonon-mediated high-T c superconductivity in hole-doped diamond-like cubic crystalline hydrocarbon K4-CH (space group I21/3). This material possesses three key properties: (i) an all-sp3 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.

Authors:
 [1];  [2];  [3];  [4]
  1. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  2. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS); Univ. of Chinese Academy of Sciences, Beijing (China). School of Physics
  3. Tsinghua Univ., Beijing (China). Dept. of Physics and State Key Lab. of Low-Dimensional Quantum Physics
  4. Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics and High Pressure Science and Engineering Center
Publication Date:
Research Org.:
Board of Regents Nevada System of Higher Education, Las Vegas, NV (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences
OSTI Identifier:
1368349
Grant/Contract Number:  
NA0001982; 11274356; 11674364; XDB07000000; 2016YFA0301001
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Condensed-matter physics; Theory and computation

Citation Formats

Lian, Chao-Sheng, Wang, Jian-Tao, Duan, Wenhui, and Chen, Changfeng. Phonon-mediated high-T c superconductivity in hole-doped diamond-like crystalline hydrocarbon. United States: N. p., 2017. Web. doi:10.1038/s41598-017-01541-6.
Lian, Chao-Sheng, Wang, Jian-Tao, Duan, Wenhui, & Chen, Changfeng. Phonon-mediated high-T c superconductivity in hole-doped diamond-like crystalline hydrocarbon. United States. https://doi.org/10.1038/s41598-017-01541-6
Lian, Chao-Sheng, Wang, Jian-Tao, Duan, Wenhui, and Chen, Changfeng. Wed . "Phonon-mediated high-T c superconductivity in hole-doped diamond-like crystalline hydrocarbon". United States. https://doi.org/10.1038/s41598-017-01541-6. https://www.osti.gov/servlets/purl/1368349.
@article{osti_1368349,
title = {Phonon-mediated high-T c superconductivity in hole-doped diamond-like crystalline hydrocarbon},
author = {Lian, Chao-Sheng and Wang, Jian-Tao and Duan, Wenhui and Chen, Changfeng},
abstractNote = {We here predict by ab initio calculations phonon-mediated high-T c superconductivity in hole-doped diamond-like cubic crystalline hydrocarbon K4-CH (space group I21/3). This material possesses three key properties: (i) an all-sp3 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.},
doi = {10.1038/s41598-017-01541-6},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Wed May 03 00:00:00 EDT 2017},
month = {Wed May 03 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

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