Spin-Orbit Coupled Degenerate Fermi Gases

被引：892

作者：

Wang, Pengjun ^{[1
]}

Yu, Zeng-Qiang ^{[2
]}

Fu, Zhengkun ^{[1
]}

Miao, Jiao ^{[2
]}

Huang, Lianghui ^{[1
]}

Chai, Shijie ^{[1
]}

Zhai, Hui ^{[2
]}

Zhang, Jing ^{[1
]}

机构：

[1] Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devics, Taiyuan 030006, Peoples R China

[2] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 09期

关键词：

Electron gas - Radio waves - Spin dynamics - Fermions - Momentum;

D O I：

10.1103/PhysRevLett.109.095301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter, we report the first experimental realization and investigation of a spin-orbit coupled Fermi gas. Both spin dephasing in spin dynamics and momentum distribution asymmetry of the equilibrium state are observed as hallmarks of spin-orbit coupling in a Fermi gas. The single particle dispersion is mapped out by using momentum-resolved radio-frequency spectroscopy. From momentum distribution and momentum-resolved radio-frequency spectroscopy, we observe the change of fermion population in different helicity branches consistent with a finite temperature calculation, which indicates that a Lifshitz transition of the Fermi surface topology change can be found by further cooling the system.

引用

页数：5

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