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DOI10.1126/science.aat4387
Spin transport in a Mott insulator of ultracold fermions
Nichols, Matthew A.1,2,3; Cheuk, Lawrence W.2,4; Okan, Melih1,2,3; Hartke, Thomas R.1,2,3; Mendez, Enrique1,2,3; Senthil, T.1; Khatami, Ehsan5; Zhang, Hao1,2,3; Zwierlein, Martin W.1,2,3
2019-01-25
发表期刊SCIENCE
ISSN0036-8075
EISSN1095-9203
出版年2019
卷号363期号:6425页码:383-+
文章类型Article
语种英语
国家USA
英文摘要

Strongly correlated materials are expected to feature unconventional transport properties, such that charge, spin, and heat conduction are potentially independent probes of the dynamics. In contrast to charge transport, the measurement of spin transport in such materials is highly challenging. We observed spin conduction and diffusion in a system of ultracold fermionic atoms that realizes the half-filled Fermi-Hubbard model. For strong interactions, spin diffusion is driven by super-exchange and doublon-hole-assisted tunneling, and strongly violates the quantum limit of charge diffusion. The technique developed in this work can be extended to finite doping, which can shed light on the complex interplay between spin and charge in the Hubbard model.


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:000456871800034
WOS关键词DYNAMICS ; DIFFUSION ; GAS ; SUPERCONDUCTOR ; TRANSITION ; PHYSICS ; CHARGE ; MODEL
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/200617
专题地球科学
资源环境科学
气候变化
作者单位1.MIT, Dept Phys, Cambridge, MA 02139 USA;
2.MIT Harvard Ctr Ultracold Atoms, Cambridge, MA 02139 USA;
3.MIT, Res Lab Elect, Cambridge, MA 02139 USA;
4.Harvard Univ, Dept Phys, Cambridge, MA 02138 USA;
5.San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA
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GB/T 7714
Nichols, Matthew A.,Cheuk, Lawrence W.,Okan, Melih,et al. Spin transport in a Mott insulator of ultracold fermions[J]. SCIENCE,2019,363(6425):383-+.
APA Nichols, Matthew A..,Cheuk, Lawrence W..,Okan, Melih.,Hartke, Thomas R..,Mendez, Enrique.,...&Zwierlein, Martin W..(2019).Spin transport in a Mott insulator of ultracold fermions.SCIENCE,363(6425),383-+.
MLA Nichols, Matthew A.,et al."Spin transport in a Mott insulator of ultracold fermions".SCIENCE 363.6425(2019):383-+.
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