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Structural and electronic properties of perovskite hydrides ACaH3 (A=Cs and Rb)


 
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1. Title Title of document Structural and electronic properties of perovskite hydrides ACaH3 (A=Cs and Rb)
 
2. Creator Author's name, affiliation, country S Lamichhane; Central Department of Physics, Tribhuvan University, Kathmandu; Nepal
 
2. Creator Author's name, affiliation, country B Aryal; Central Department of Physics, Tribhuvan University, Kathmandu; Nepal
 
2. Creator Author's name, affiliation, country GC Kaphle; Central Department of Physics, Tribhuvan University, Kathmandu, Nepal; Tri-Chandra Multiple Campus, Ghantaghar, Kathmandu, Nepal; Condensed Matter Physics Research Center, Butwal, Rupandehi; Nepal
 
2. Creator Author's name, affiliation, country NP Adhikari; Central Department of Physics, Tribhuvan University, Kathmandu; Nepal
 
3. Subject Discipline(s) Physics; Chemistry; Material Science, Engineering, Condensed matter Physics
 
3. Subject Keyword(s) Projected density of states; perovskite; charge density and TB-LMTO-ASA
 
4. Description Abstract

We have performed structural properties, electronic properties, charge density and potential distribution of CsCaH3 and RbCaH3 using TB-LMTO-ASA approach under local density approximation.  Our findings show that both CsCaH3 and RbCaH3 are non-magnetic and then insulators with estimated direct band gaps (M-M) of 3.15 eV and 3.17 eV respectively. Our estimated values of band gap suggest to both materials as better candidate for the high frequency ultra-violet devices. Furthermore, role of corner atoms in perovskite hydrides are also presented in this study. Present calculations agree well with the previous work.

BIBECHANA 13 (2016) 94-99

 
5. Publisher Organizing agency, location Birat Campus, Biratnagar, Nepal
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 2015-12-03
 
8. Type Status & genre Peer-Reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://www.nepjol.info/index.php/BIBECHANA/article/view/13437
 
10. Identifier Digital Object Identifier http://dx.doi.org/10.3126/bibechana.v13i0.13437
 
11. Source Title; vol., no. (year) BIBECHANA; Vol 13 (2016)
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.) Global
 
15. Rights Copyright and permissions Copyright (c) 2015 BIBECHANA