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Title: Superconductivity in dense carbon-based materials

Guided by a simple strategy in searching of new superconducting materials we predict that high temperature superconductivity can be realized in classes of high-density materials having strong sp3 chemical bonding and high lattice symmetry. Here, we examine in detail sodalite carbon frameworks doped with simple metals such as Li, Na, and Al. Though such materials share some common features with doped diamond, their doping level is not limited and the density of states at the Fermi level in them can be as high as that in the renowned MgB2. Altogether, with other factors, this boosts the superconducting temperature (Tc) in the materials investigated to higher levels compared to doped diamond. For example, the superconducting Tc of sodalite-like NaC6 is predicted to be above 100 K. This phase and a series of other sodalite-based superconductors are predicted to be metastable phases but are dynamically stable. In owing to the rigid carbon framework of these and related dense carbon-materials, these doped sodalite-based structures could be recoverable as potentially useful superconductors.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [1] ;  [3]
  1. Jilin Univ., Changchun (China). State Key Lab. of Supramolecular Structure and Materials
  2. Univ. of Saskatchewan, Saskatoon, SK (Canada). Dept. of Physics and Engineering Physics; Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
  3. Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Lab.
  4. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics
  5. Jiangsu Normal Univ., Xuzhou (Peoples Republic of China). School of Physics and Electronic Engineering
  6. Univ. of Saskatchewan, Saskatoon, SK (Canada). Dept. of Physics and Engineering Physics; Jilin Univ., Changchun (China). State Key Lab. of Superhard Materials
Publication Date:
Grant/Contract Number:
NA0002006; SC-0001057
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 10; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Carnegie Institution for Science, Washington, DC (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1364602
Alternate Identifier(s):
OSTI ID: 1364602