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セガワ コウジ
SEGAWA KOJI
瀬川 耕司 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2015/02 |
| 形態種別 | 研究論文 |
| 標題 | Synthesis and characterization of 3D topological insulators: a case TlBi(S1-xSex) |
| 執筆形態 | その他 |
| 掲載誌名 | SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS |
| 出版社・発行元 | IOP PUBLISHING LTD |
| 巻・号・頁 | 16(1) |
| 著者・共著者 | Kouji Segawa |
| 概要 | In this article, practical methods for synthesizing Tl-based ternary III-V-VI2 chalcogenide TlBi(S1-xSex)(2) are described in detail, along with characterization by x-ray diffraction and charge transport properties. The TlBi(S1-xSex)(2) system is interesting because it shows a topological phase transition, where a topologically nontrivial phase changes to a trivial phase without changing the crystal structure qualitatively. In addition, Dirac semimetals whose bulk band structure shows a Dirac-like dispersion are considered to exist near the topological phase transition. The technique shown here is also generally applicable for other chalcogenide topological insulators, and will be useful for studying topological insulators and related materials. |
| DOI | 10.1088/1468-6996/16/1/014405 |
| ISSN | 1468-6996/1878-5514 |
| PermalinkURL | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84923762687&origin=inward |