| As-nmr/nqr study of cafe2as2 under pressure | |
| Kawasaki, Shinji1; Oka, Toshihide1; Tabuchi, Takahisa1; Wang, X. F.2,3; Chen, X. H.2,3; Zheng, Guo-qing1,4,5 | |
| 刊名 | Journal of the physical society of japan
 |
| 2011-07-01 | |
| 卷号 | 80页码:3 |
| 关键词 | Cafe2as2 Superconductivity Quantum critical point Nmr/nqr Pressure |
| ISSN号 | 0031-9015 |
| 通讯作者 | Kawasaki, shinji(kawasaki@science.okayama-u.ac.jp) |
| 英文摘要 | As-75-zero-field nuclear magnetic resonance (nmr) and nuclear quadrupole resonance (nqr) measurements are performed on cafe2as2 under pressure. at p = 4.7 and 10.8 kbar, the temperature dependence of nuclear-spin-lattice relaxation rate (1/t-1) measured at tetragonal phase show no coherence peak just below t-c and decrease with decreasing temperature. the superconductivity is of gapless at p = 4.7 kbar but evolves to multiple gaps at p = 10.8 kbar. we find that the superconductivity appears near a quantum critical point. both electron correlation and superconductivity disappear in the collapsed tetragonal phase. a systematic study under pressure indicates that electron correlations play a vital role in forming cooper pairs in this compound. |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | PHYSICAL SOC JAPAN |
| WOS记录号 | WOS:000208728400116 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2373765 |
| 专题 | 物理研究所 |
| 通讯作者 | Kawasaki, Shinji |
| 作者单位 | 1.Okayama Univ, Dept Phys, Okayama 7008530, Japan 2.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China 3.Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kawasaki, Shinji,Oka, Toshihide,Tabuchi, Takahisa,et al. As-nmr/nqr study of cafe2as2 under pressure[J]. Journal of the physical society of japan,2011,80:3. |
| APA | Kawasaki, Shinji,Oka, Toshihide,Tabuchi, Takahisa,Wang, X. F.,Chen, X. H.,&Zheng, Guo-qing.(2011).As-nmr/nqr study of cafe2as2 under pressure.Journal of the physical society of japan,80,3. |
| MLA | Kawasaki, Shinji,et al."As-nmr/nqr study of cafe2as2 under pressure".Journal of the physical society of japan 80(2011):3. |
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