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相关论文: Numerical analysis of spin-orbit coupled one dimen…

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Spin-orbit coupling plays an increasingly important role in the modern condensed matter physics. For instance, it gives birth to topological insulators and topological superconductors. Quantum simulation of spin-orbit coupling using…

量子气体 · 物理学 2015-06-04 Pengjun Wang , Zeng-Qiang Yu , Zhengkun Fu , Jiao Miao , Lianghui Huang , Shijie Chai , Hui Zhai , Jing Zhang

We investigate the pairing physics in a three-component Fermi-Fermi mixture, where a few impurities are immersed in a non-interacting spin-$\frac{1}{2}$ Fermi gas with synthetic spin-orbit coupling (SOC), and interact attractively with one…

量子气体 · 物理学 2015-06-19 Lihong Zhou , Xiaoling Cui , Wei Yi

Motivated by recent experimental breakthroughs in generating spin-orbit coupling in ultracold Fermi gases using Raman laser beams, we present a systematic study of spin-orbit-coupled Fermi gases confined in a quasi-one-dimensional trap in…

量子气体 · 物理学 2015-06-19 Lei Jiang , Eite Tiesinga , Xia-Ji Liu , Hui Hu , Han Pu

The collective dipole mode is induced and measured in a spin-orbit (SO) coupled degenerate Fermi gas of $^{173}$Yb atoms. Using a differential optical Stark shift, we split the degeneracy of three hyperfine states in the ground manifold,…

量子气体 · 物理学 2018-11-27 Shanchao Zhang , Chengdong He , Elnur Hajiyev , Zejian Ren , Bo Song , Gyu-Boong Jo

Understanding novel pairings in attractive degenerate Fermi gases is crucial for exploring rich superfluid physics. In this report, we reveal unconventional pairings induced by spin-orbit coupling (SOC) in a one-dimensional optical lattice,…

量子气体 · 物理学 2015-10-09 Junjun Liang , Xiaofan Zhou , Pak Hong Chui , Kuang Zhang , Shi-jian Gu , Ming Gong , Gang Chen , Suotang Jia

The coupling of the spin of electrons to their motional state lies at the heart of recently discovered topological phases of matter. Here we create and detect spin-orbit coupling in an atomic Fermi gas, a highly controllable form of quantum…

We show the spin-orbital coupling induced by an artificial light-induced gauge field can fully restore superfluidity suppressed by population imbalance in a two-dimensional (2D) Fermi gas, leading to unconventional superfluid states either…

量子气体 · 物理学 2011-10-12 J. -N. Zhang , Y. -H. Chan , L. -M. Duan

Superconductivity and magnetism generally do not coexist. Changing the relative number of up and down spin electrons disrupts the basic mechanism of superconductivity, where atoms of opposite momentum and spin form Cooper pairs. Nearly…

We study the properties of a one-dimensional (1D) gas of fermions trapped in a lattice by means of the density matrix renormalization group method, focusing on the case of unequal spin populations, and strong attractive interaction. In the…

强关联电子 · 物理学 2008-01-02 A. E. Feiguin , F. Heidrich-Meisner

We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase…

量子气体 · 物理学 2014-08-26 Ho-Kin Tang , Xiaosen Yang , Jinhua Sun , Hai-Qing Lin

Based on density matrix renormalization group method, we investigate the spin-orbit coupled Fermi gas with attractive interactions in one-dimensional optical lattice and present a complete phase diagram for a quarter-filling system with…

强关联电子 · 物理学 2015-11-06 Haiping Hu , Chen Cheng , Yucheng Wang , Hong-Gang Luo , Shu Chen

We show that an interesting of pairing occurs for spin-imbalanced Fermi gases under a specific experimental condition---the spin up and spin down Fermi levels lying within the $p_x$ and $s$ orbital bands of an optical lattice, respectively.…

量子气体 · 物理学 2014-11-20 Zixu Zhang , Hsiang-Hsuan Hung , Chiu Man Ho , Erhai Zhao , W. Vincent Liu

We investigate properties of exotic pairing states in a three-dimensional Fermi gas with three-dimensional spin-orbit coupling and an effective Zeeman field. The interplay of spin-orbit coupling, effective Zeeman field and pairing can lead…

量子气体 · 物理学 2013-06-10 Xiang-Fa Zhou , Guang-Can Guo , Wei Zhang , Wei Yi

We investigate the collective modes in the spin-orbit coupled Fermi gas with repulsive s-wave interaction. The interplay between spin-orbit coupling and atom-atom interactions plays the crucial role in the collective behaviors of Fermi gas.…

量子气体 · 物理学 2015-06-12 Shang-Shun Zhang , Xiao-Lu Yu , Jinwu Ye , Wu-Ming Liu

We use the Bogoliubov-de Gennes formalism to analyze harmonically trapped Fermi gases with Rashba-type spin-orbit coupling in two dimensions. We consider both population-balanced and -imbalanced Fermi gases throughout the BCS-BEC evolution,…

量子气体 · 物理学 2015-06-05 M. Iskin

We show that spin-orbit coupling (SOC) gives rise to pairing instability in a highly polarized two-dimensional Fermi gas for arbitrary interaction strength. The pairing instability can lead to a Fulde-Ferrell-Larkin-Ovchinnikov-like…

量子气体 · 物理学 2012-10-08 Wei Yi , Wei Zhang

We obtain the phase diagram of spin-imbalanced interacting Fermi gases from measurements of density profiles of $^6$Li atoms in a harmonic trap. These results agree with, and extend, previous experimental measurements. Measurements of the…

原子物理 · 物理学 2015-12-16 Ben A. Olsen , Melissa C. Revelle , Jacob A. Fry , Daniel E. Sheehy , Randall G. Hulet

We theoretically investigate one-dimensional three-component spin-orbit-coupled Fermi gases in the presence of Zeeman field. By solving the Bogoliubov-de-Gennes equations, we obtain the phase diagram at given chemical potential and order…

量子气体 · 物理学 2014-08-26 Jie Chen , Hui Hu , Gao Xianlong

Motivated by recent experimental development, we investigate spin-orbit coupled repulsive Fermi atoms in a one-dimensional optical lattice. Using the density-matrix renormalization group method, we calculate momentum distribution function,…

量子气体 · 物理学 2015-10-09 Xiaofan Zhou , Kuang Zhang , Junjun Liang , Gang Chen , Suotang Jia

We calculate the density profiles of a trapped spin-imbalanced Fermi gas with attractive interactions in a one-dimensional optical lattice, using both the local density approximation (LDA) and density matrix renormalization group (DMRG)…

量子气体 · 物理学 2010-05-07 F. Heidrich-Meisner , G. Orso , A. Feiguin
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