Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors
文献类型：期刊论文
| 作者 | Ding, H ; Yokoya, T ; Campuzano, JC ; Takahashi, T ; Randeria, M ; Norman, MR ; Mochiku, T ; Kadowaki, K ; Giapintzakis, J |
| 刊名 | NATURE
 |
| 出版日期 | 1996 |
| 卷号 | 382期号:6586页码:51 |
| 关键词 | SPIN DYNAMICS BI2SR2CACU2O8+DELTA YBA2CU3O6+X ANISOTROPY GAP |
| ISSN号 | 0028-0836 |
| 中文摘要 | IT is well known that BCS mean-field theory is remarkably successful in describing conventional superconductors. A central concept of BCS theory is the energy gap in the electronic excitation spectrum below the superconducting transition temperature, T-c. The gap also serves as the order parameter: quite generally, long-range phase coherence and a non-zero gap go hand-in-hand(1). But in underdoped high-T-c superconductors there is considerable evidence that a pseudogap (a suppression of spectral weight) is already formed in the normal state above T-c-first, from studies of the spin excitation spectrum(2-5,24), which measure a 'spin gap', and later from a variety of other probes(6-10). Here we present a study of underdoped Bi2Sr2CaCu2O8+delta (Bi2212) using angle-resolved photoemission spectroscopy (ARPES), which directly measures the momentum-resolved electron excitation spectrum of the CuO2 planes. We find that a pseudogap with d-wave symmetry opens up in the normal state below a temperature T* > T-c, and develops into the d-wave superconducting gap once phase coherence is established below T-c. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57989]  |
| 专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ding, H,Yokoya, T,Campuzano, JC,et al. Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors[J]. NATURE,1996,382(6586):51. |
| APA | Ding, H.,Yokoya, T.,Campuzano, JC.,Takahashi, T.,Randeria, M.,...&Giapintzakis, J.(1996).Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors.NATURE,382(6586),51. |
| MLA | Ding, H,et al."Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors".NATURE 382.6586(1996):51. |
入库方式： OAI收割
来源：物理研究所
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