期刊論文
| 學年 | 113 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2024-10-29 |
| 作品名稱 | The growing charge-density-wave order in CuTe lightens and speeds up electrons |
| 作品名稱（其他語言） | |
| 著者 | I-Ta Wang, Ta-Lei Chou, Chih-En Hsu, Zhujialei Lei, Li-Min Wang, Ping-Hui Lin, Chih-Wei Luo, Chun-Wei Chen, Chia-Nung Kuo, Chin Shan Lue, Cheng-Hsuan Chen, Hung-Chung Hsueh & Ming-Wen Chu |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Nature Communications 15, p.9345 |
| 摘要 | Charge density waves (CDWs) are pervasive orders in solids that usually enhance the effective mass (m*) and reduce the Fermi velocity (vF) of carriers. Here, we report on the inverse — a reduced m* and an enhanced correlated with the growth of the CDW order in CuTe with gapped, practically linearly dispersing bands — reminiscent of emergent CDW-gapped topological semimetals. Using momentum-dependent electron energy-loss spectroscopy (q-EELS), we simultaneously capture m* and of the CDW-related, practically linearly dispersing electrons by plasmon dispersions across the transition (335 K, TCDW), with m* of 0.28 m0 (m0, the electron rest mass) and of ~ 0.005c (c, the speed of light) at 300 K. With the growth of the CDW order-parameter strength toward 100 K, the electrons become lighter and move faster by ~ 20%. Thorough inspection below TCDW unveils the essential role of the increasing opening of the CDW gap. CuTe is a rich platform for the exploration of CDW/correlation physics with q-EELS established as a useful probe for this type of physics. |
| 關鍵字 | |
| 語言 | zh_TW |
| ISSN | 2041-1723 |
| 期刊性質 | 國外 |
| 收錄於 | SCI Scopus |
| 產學合作 | |
| 通訊作者 | Hung-Chung Hsueh and Ming-Wen Chu |
| 審稿制度 | 否 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/127522 ) |