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DOI | 10.1126/science.aat8687 |
Quantum-critical conductivity of the Dirac fluid in graphene | |
Gallagher, Patrick1,2,3; Yang, Chan-Shan1,4; Lyu, Tairu1; Tian, Fanglin1,5; Kou, Rai1; Zhang, Hai1,6; Watanabe, Kenji7; Taniguchi, Takashi7; Wang, Feng1,2,3,8 | |
2019-04-12 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 364期号:6436页码:158-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Taiwan; Peoples R China; Japan |
英文摘要 | Graphene near charge neutrality is expected to behave like a quantum-critical, relativistic plasma-the "Dirac fluid"-in which massless electrons and holes collide at a rapid rate. We used on-chip terahertz spectroscopy to measure the frequency-dependent optical conductivity of clean, micrometer-scale graphene at electron temperatures between 77 and 300 kelvin. At charge neutrality, we observed the quantum-critical scattering rate characteristic of the Dirac fluid. At higher doping, we detected two distinct current-carrying modes with zero and nonzero total momenta, a manifestation of relativistic hydrodynamics. Our work reveals the quantum criticality and unusual dynamic excitations near charge neutrality in graphene. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464620000037 |
WOS关键词 | TERAHERTZ ; SPECTROSCOPY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/201201 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA; 2.Univ Calif Berkeley, Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA; 3.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA; 4.Natl Taiwan Normal Univ, Inst Electroopt Sci & Technol, Taipei 11677, Taiwan; 5.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China; 6.Nanchang Inst Technol, Sch Informat Engn, Nanchang 330099, Jiangxi, Peoples R China; 7.Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan; 8.Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Gallagher, Patrick,Yang, Chan-Shan,Lyu, Tairu,et al. Quantum-critical conductivity of the Dirac fluid in graphene[J]. SCIENCE,2019,364(6436):158-+. |
APA | Gallagher, Patrick.,Yang, Chan-Shan.,Lyu, Tairu.,Tian, Fanglin.,Kou, Rai.,...&Wang, Feng.(2019).Quantum-critical conductivity of the Dirac fluid in graphene.SCIENCE,364(6436),158-+. |
MLA | Gallagher, Patrick,et al."Quantum-critical conductivity of the Dirac fluid in graphene".SCIENCE 364.6436(2019):158-+. |
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