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相关论文: Spin-orbit coupled repulsive Fermi atoms in a one-…

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We study the effects of spin-orbit coupling on the Mott-superfluid transition of bosons in a one-dimensional optical lattice. We determine the strong coupling magnetic phase diagram by a combination of exact analytic and numerical means.…

强关联电子 · 物理学 2014-05-26 Zhihao Xu , William Cole , Shizhong Zhang

Spin-orbit coupling (SOC) drives interesting and non-trivial phenomena in solid state physics, ranging from topological to magnetic to transport properties. Thorough study of such phenomena often require effective models where SOC term is…

材料科学 · 物理学 2024-07-09 Qiangqiang Gu , Shishir Kumar Pandey

Spin-orbit coupling (SOC) can give rise to interesting physics, from spin Hall to topological insulators, normally in condensed matter systems. Recently, this topical area has extended into atomic quantum gases in searching for…

量子气体 · 物理学 2012-04-11 Z. F. Xu , L. You

We study the phase diagram of one dimensional spin one-half fermionic cold atoms. The two ``spin'' species can have different hopping or mass. The phase diagram at equal densities of the species is found to be very rich, Mott insulators as…

软凝聚态物质 · 物理学 2007-05-23 M. A. Cazalilla , A. F. Ho , T. Giamarchi

Recently, Bi-based compounds have attracted attentions because of the strong spin-orbit coupling (SOC). In this work, we figured out the role of SOC in ABi$_{3}$ (A=Sr and Ba) by theoretical investigation of the band structures, phonon…

超导电性 · 物理学 2015-10-21 D. F. Shao , X. Luo , W. J. Lu , L. Hu , X. D. Zhu , W. H. Song , X. B. Zhu , Y. P. Sun

We study the competition between various forms of density-wave-like order parameters that may arise in multi-orbital correlated materials with strong spin-orbit coupling (SOC) within a renormalization-group (RG) approach. The calculations…

强关联电子 · 物理学 2014-07-15 Tanmoy Das , Armin Rahmani

The admixture of spin-singlet and spin-triplet pairing states in superconductors can be typically induced by breaking spatial inversion symmetry. Employing the {\it numerically exact} auxiliary-field Quantum Monte Carlo method, we study…

强关联电子 · 物理学 2024-03-26 Yu-Feng Song , Youjin Deng , Yuan-Yao He

We report the observation of tunable spin-orbit coupling (SOC) for ultracold $^{87}$Rb atoms in hyperfine spin-1 states. Different from most earlier experiments where atomic SOC of pseudo-spin-1/2 are synthesized with Raman coupling lasers,…

量子气体 · 物理学 2017-01-05 Xinyu Luo , Lingna Wu , Jiyao Chen , Qing Guan , Kuiyi Gao , Zhi-Fang Xu , L. You , Ruquan Wang

Synthetic spin-orbit coupling (SOC) in controlled quantum systems such as cold atoms or trapped ions has been of great interest. Here we show, both theoretically and computationally, a simplest realization of SOC using two-level cold atoms…

量子气体 · 物理学 2015-06-11 Qi Zhang , Jiangbin Gong , C. H. Oh

A Fermi-liquid (FL) with spin-orbit coupling (SOC) supports a special type of collective modes--chiral spin waves--which are oscillations of magnetization even in the absence of the external magnetic field. We study the chiral spin waves of…

介观与纳米尺度物理 · 物理学 2017-05-03 Abhishek Kumar , Dmitrii L. Maslov

Strong spin-orbital coupling (SOC) was found previously to lead to dramatic effects in quantum materials, such as those found in topological insulators. It was shown theoretically that local noncentrosymmetricity resulting from the rotation…

强关联电子 · 物理学 2015-07-02 Chenyi Shen , Hui Xing , Xinxin Cai , David Fobes , Mingliang Tian , Zhi-Qiang Mao , Zhuan Xu , Ying Liu

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

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

We briefly review the recent progress of theories and experiments on spin-orbital-angular-momentum (SOAM)-coupled quantum gases. The coupling between the intrinsic degree of freedom of particles and their external orbital motions widely…

量子气体 · 物理学 2023-01-12 Shi-Guo Peng , Kaijun Jiang , Xiao-Long Chen , Ke-Ji Chen , Peng Zou , Lianyi He

The spin-orbit couplings (SOCs) of hydrogenated and fluorinated graphenes are calculated from the first principles method. It is found that the SOC-induced band splittings near their Fermi energies can be significantly enhanced to the order…

介观与纳米尺度物理 · 物理学 2016-08-19 Jian Zhou , Qifeng Liang , Jinming Dong

We propose a procedure for extraction of the Fermi surface for a two-dimensional electron gas with a strong Rashba spin-orbit coupling from conductance microscopy. Due to the interplay between the effective spin-orbit magnetic field and the…

介观与纳米尺度物理 · 物理学 2016-02-05 K. Kolasiński , H. Sellier , B. Szafran

Spin orbit coupling provides a mechanism to lock the momentum of electron to its spin degree, recent years was revealed to be essential in arousing many novel physical behaviors. SrIrO3 is a typical metallic member of the strong spin orbit…

材料科学 · 物理学 2018-08-10 Lunyong Zhang , Bin Pang , Y. B. Chen , Yanfeng Chen

With octahedrally coordinated $t_{\rm 2g}$ orbitals which are active at filling $n=2$, the $\rm Sr_2CrO_4$ compound exhibits rich interplay of spin-orbital physics with tetragonal distortion induced crystal field tuning by external agent…

强关联电子 · 物理学 2022-10-20 Shubhajyoti Mohapatra , Dheeraj Kumar Singh , Avinash Singh

Electronic structure calculations were performed on the compound CoS$_2$, an itinerant ferromagnet whose magnetic properties can be understood in terms of spin fluctuation theory. We have identified nesting features in the Fermi surface of…

强关联电子 · 物理学 2010-12-15 A. Piñeiro , A. S. Botana , V. Pardo , D. Baldomir

The realization of spin-orbit coupling (SOC) in ultracold atoms has triggered an intensive exploring of topological superfluids in the degenerate Fermi gases based on mean-field theory, which has not yet been reported in experiments. Here,…

量子气体 · 物理学 2021-09-13 Xiaosen Yang , Ho-Kin Tang , Noah Fan Qi Yuan , Beibing Huang , Guangcan Guo , Ming Gong , Hai-Qing Lin