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Title: Characterization of Thin Film Materials using SCAN meta-GGA, an Accurate Nonempirical Density Functional

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep44766· OSTI ID:1423570
 [1];  [1];  [1];  [2];  [3];  [1]
  1. Northeastern Univ., Boston, MA (United States). Dept. of Physics
  2. Temple Univ., Philadelphia, PA (United States). Dept. of Physics
  3. Univ. of Texas, El Paso, TX (United States). Dept. of Physics

We discuss self-consistently obtained ground-state electronic properties of monolayers of graphene and a number of ’beyond graphene’ compounds, including films of transition-metal dichalcogenides (TMDs), using the recently proposed strongly constrained and appropriately normed (SCAN) meta-generalized gradient approximation (meta-GGA) to the density functional theory. The SCAN meta-GGA results are compared with those based on the local density approximation (LDA) as well as the generalized gradient approximation (GGA). As expected, the GGA yields expanded lattices and softened bonds in relation to the LDA, but the SCAN meta-GGA systematically improves the agreement with experiment. Our study suggests the efficacy of the SCAN functional for accurate modeling of electronic structures of layered materials in high-throughput calculations more generally.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Complex Materials from First Principles (CCM); Northeastern Univ., Boston, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Center for Computational Design of Functional Layered Materials (CCDM); National Energy Research Scientific Computing Center (NERSC)
Grant/Contract Number:
FG02-07ER46352; AC02-05CH11231; SC0012575
OSTI ID:
1423570
Journal Information:
Scientific Reports, Vol. 7; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

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Correlation effects on ground-state properties of ternary Heusler alloys: first-principles study text January 2019
Density Functional Theory for Battery Materials journal September 2019
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Correlation effects on ground-state properties of ternary Heusler alloys: First-principles study journal January 2019
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