Distinct pairing symmetries in Nd1.85Ce0.15CuO4-y and La1.89Sr0.11CuO4 single crystals: Evidence from comparative tunneling measurements
文献类型：期刊论文
| 作者 | Shan, L ; Huang, Y ; Gao, H ; Wang, Y ; Li, SL ; Dai, PC ; Zhou, F ; Xiong, JW ; Ti, WX ; Wen, HH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2005 |
| 卷号 | 72期号:14 |
| 关键词 | DOPED CUPRATE SUPERCONDUCTORS D-WAVE SUPERCONDUCTORS QUASI-PARTICLES SPECTROSCOPY SURFACE PHOTOEMISSION TRANSITION STATES GAP |
| ISSN号 | 1098-0121 |
| 通讯作者 | Shan, L: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | We used point-contact tunneling spectroscopy to study the superconducting pairing symmetry of electron-doped Nd1.85Ce0.15CuO4-y (NCCO) and hole-doped La1.89Sr0.11CuO4 (LSCO). Nearly identical spectra without zero bias conductance peak (ZBCP) were obtained on the (110) and (100) oriented surfaces (the so-called nodal and anti-nodal directions) of NCCO. In contrast, LSCO showed a remarkable ZBCP in the nodal direction as expected from a d-wave superconductor. Detailed analysis reveals an s-wave component in the pairing symmetry of the NCCO sample with Delta/k(B)T(c)=1.66, a value remarkably close to that of a weakly coupled Bardeen-Cooper-Schriffer (BCS) superconductor. We argue that this s-wave component is formed at the Fermi surface pockets centered at (+/-pi,0) and (0,+/-pi) although a d-wave component may also exist. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36150]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Shan, L,Huang, Y,Gao, H,et al. Distinct pairing symmetries in Nd1.85Ce0.15CuO4-y and La1.89Sr0.11CuO4 single crystals: Evidence from comparative tunneling measurements[J]. PHYSICAL REVIEW B,2005,72(14). |
| APA | Shan, L.,Huang, Y.,Gao, H.,Wang, Y.,Li, SL.,...&Wen, HH.(2005).Distinct pairing symmetries in Nd1.85Ce0.15CuO4-y and La1.89Sr0.11CuO4 single crystals: Evidence from comparative tunneling measurements.PHYSICAL REVIEW B,72(14). |
| MLA | Shan, L,et al."Distinct pairing symmetries in Nd1.85Ce0.15CuO4-y and La1.89Sr0.11CuO4 single crystals: Evidence from comparative tunneling measurements".PHYSICAL REVIEW B 72.14(2005). |
入库方式： OAI收割
来源：物理研究所
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