Significant enhancement of superconductivity in copper-doped 2h-tase2
文献类型：期刊论文
| 作者 | Li,X C1,2; Zhou,M H1,2; Yang,L H1; Dong,C1 |
| 刊名 | Superconductor science and technology
 |
| 出版日期 | 2017-10-26 |
| 卷号 | 30期号:12 |
| 关键词 | Superconductivity Copper-doped 2h-tase2 74.25.fc 74.25.ha 74.70.dd |
| ISSN号 | 0953-2048 |
| DOI | 10.1088/1361-6668/aa9000 |
| 英文摘要 | Abstract a series of cuxtase2 (0 ≤ x ≤ 0.12) samples were prepared and characterized via x-ray diffraction, magnetization, resistivity, and heat capacity measurements. we found that the charge density wave phases in 2h-cuxtase2 are noticeably suppressed and the superconducting critical temperatures tc are significantly enhanced from 0.14 k for pure tase2 to about 2 k in the cu-doped samples. the maximum tc of 2.7 k was obtained in the optimally doped sample with x = 0.07. the crystal structure of the cu0.07tase2 was refined by the rietveld method. magnetic measurements revealed that cu0.07tase2 is a bulk superconductor with upper critical field hc2 (0) of 4.41 t. analysis of specific heat data shows that the effective electron–phonon coupling and density of states at the fermi level are enhanced in the cu-doped samples. we present an electronic phase diagram for the 2h-cuxtase2 system. |
| 语种 | 英语 |
| WOS记录号 | IOP:0953-2048-30-12-AA9000 |
| 出版者 | IOP Publishing |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373553 |
| 专题 | 物理研究所 |
| 作者单位 | 1.Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Li,X C,Zhou,M H,Yang,L H,et al. Significant enhancement of superconductivity in copper-doped 2h-tase2[J]. Superconductor science and technology,2017,30(12). |
| APA | Li,X C,Zhou,M H,Yang,L H,&Dong,C.(2017).Significant enhancement of superconductivity in copper-doped 2h-tase2.Superconductor science and technology,30(12). |
| MLA | Li,X C,et al."Significant enhancement of superconductivity in copper-doped 2h-tase2".Superconductor science and technology 30.12(2017). |
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