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Band engineering of ternary metal nitride system Ti1-x ZrxN for plasmonic applications
| Title: | Band engineering of ternary metal nitride system Ti1-x ZrxN for plasmonic applications |
| Authors: | Kumar, Mukesh Browse this author | | Ishii, Satoshi Browse this author | | Umezawa, Naoto Browse this author | | Nagao, Tadaaki Browse this author →KAKEN DB |
| Issue Date: | 1-Jan-2016 |
| Journal Title: | Optical Materials Express |
| Volume: | 6 |
| Issue: | 1 |
| Start Page: | 29 |
| End Page: | 38 |
| Publisher DOI: | 10.1364/OME.6.000029 |
| Abstract: | Chemical composition is the primary factor that determines the electronic band structure and thus also influences the optical properties of plasmonic ceramics including nitrides and oxides. In this work, the optical and plasmonic properties of TiN, ZrN and their hypothetical intermediate alloys Ti1-xZrxN (x = 0, 0.25, 0.50, 0.75, and 1), are studied by using first-principles density functional theory. We demonstrate the effects of electronic band structure tuning (band engineering) on the dielectric properties by varying the concentration of metallic constituents. Our calculations reveal that bulk plasma frequency, onset of interband transitions, width of bulk plasmon resonance and cross-over frequency, can be tuned flexibly in visible spectrum region by varying the amount of Zr concentration in Ti1-xZrxN alloy system. We found that low threshold interband energy onset (~1.95 eV) leads to high losses in Ti rich compounds than that of ZrN which points to lower losses. |
| Rights: | © 2015 Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/72126 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 長尾 忠昭
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