抄録
EXAFS, conductivity and Hall coefficient measurements have been carried out for liquid As-Te mixtures. EXAFS analysis reveals the presence of chemical disorder marked by the existence of homopolar As-As and Te-Te pairs. At high temperature around 500 °C the network structure composed of threefold coordinated As atoms and twofold coordinated Te atoms is transformed into the twofold chain structure. The network-chain transformation is accompanied by the gradual semiconductor to metal transition which is demonstrated by the results for conductivity and Hall coefficient. The microscopic origin of the semiconductor to metal transition is discussed in connection with the structural modification.
| 本文言語 | 英語 |
|---|---|
| ページ（範囲） | 6077-6099 |
| ページ数 | 23 |
| ジャーナル | Journal of Physics Condensed Matter |
| 巻 | 12 |
| 号 | 28 |
| DOI | |
| 出版ステータス | 出版済み - 2000/07/17 |
| イベント | The 1999 Adriatico Research Conference - Trieste, Italy 継続期間: 1999/06/28 → 1999/07/02 |
ASJC Scopus 主題領域
- 材料科学一般
- 凝縮系物理学