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DOI | 10.1126/science.aat4134 |
Bad metallic transport in a cold atom Fermi-Hubbard system | |
Brown, Peter T.1; Mitra, Debayan1; Guardado-Sanchez, Elmer1; Nourafkan, Reza2,3; Reymbaut, Alexis2,3; Hebert, Charles-David2,3; Bergeron, Simon2,3; Tremblay, A. -M. S.2,3,4; Kokalj, Jure5,6; Huse, David A.1; Schauss, Peter1,7; Bakr, Waseem S.1 | |
2019-01-25 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 363期号:6425页码:379-382 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada; Slovenia |
英文摘要 | Strong interactions in many-body quantum systems complicate the interpretation of charge transport in such materials. To shed light on this problem, we study transport in a clean quantum system: ultracold lithium-6 in a two-dimensional optical lattice, a testing ground for strong interaction physics in the Fermi-Hubbard model. We determine the diffusion constant by measuring the relaxation of an imposed density modulation and modeling its decay hydrodynamically. The diffusion constant is converted to a resistivity by using the Nernst-Einstein relation. That resistivity exhibits a linear temperature dependence and shows no evidence of saturation, two characteristic signatures of a bad metal. The techniques we developed in this study may be applied to measurements of other transport quantities, including the optical conductivity and thermopower. |
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:000486158400001 |
WOS关键词 | CONDUCTION |
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/200619 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Princeton Univ, Dept Phys, Princeton, NJ 08544 USA; 2.Univ Sherbrooke, Dept Phys, Inst Quant, Sherbrooke, PQ J1K 2R1, Canada; 3.Univ Sherbrooke, Regrp Quebecois Mat Pointe, Sherbrooke, PQ J1K 2R1, Canada; 4.Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada; 5.Univ Ljubljana, Fac Civil & Geodet Engn, SI-1000 Ljubljana, Slovenia; 6.Jozef Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia; 7.Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA |
推荐引用方式 GB/T 7714 | Brown, Peter T.,Mitra, Debayan,Guardado-Sanchez, Elmer,et al. Bad metallic transport in a cold atom Fermi-Hubbard system[J]. SCIENCE,2019,363(6425):379-382. |
APA | Brown, Peter T..,Mitra, Debayan.,Guardado-Sanchez, Elmer.,Nourafkan, Reza.,Reymbaut, Alexis.,...&Bakr, Waseem S..(2019).Bad metallic transport in a cold atom Fermi-Hubbard system.SCIENCE,363(6425),379-382. |
MLA | Brown, Peter T.,et al."Bad metallic transport in a cold atom Fermi-Hubbard system".SCIENCE 363.6425(2019):379-382. |
条目包含的文件 | 条目无相关文件。 |
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