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Fermi gases with generalized Rashba spin orbit coupling inducedby a synthetic gauge field have the potential of realizing many interesting states such as rashbon condensates and topological phases. Here we develop a fluctuation theory of…

量子气体 · 物理学 2015-10-07 Jayantha P. Vyasanakere , Vijay B. Shenoy

Motivated by the prospect of realizing a Fermi gas of $^{40}$K atoms with a synthetic non-Abelian gauge field, we investigate theoretically a strongly interacting Fermi gas in the presence of a Rashba spin-orbit coupling. As the two-fold…

量子气体 · 物理学 2011-11-18 Hui Hu , Lei Jiang , Xia-Ji Liu , Han Pu

We present an $\textit{ab initio}$, numerically exact study of attractive fermions in square lattices with Rashba spin-orbit coupling. The ground state of this system is a supersolid, with co-existing charge and superfluid order. The…

量子气体 · 物理学 2018-01-03 Peter Rosenberg , Hao Shi , Shiwei Zhang

We present a theoretical study of the superfluidity and the corresponding collective modes in two-component atomic Fermi gases with s-wave attraction and synthetic Rashba spin-orbit coupling. The general effective action for the collective…

量子气体 · 物理学 2013-07-25 Lianyi He , Xu-Guang Huang

We theoretically investigate strong-coupling effects on specific heat at constant volume $C_{\rm V}$ in a superfluid Fermi gas with a tunable interaction associated with Feshbach resonance. Including fluctuations of the superfluid order…

量子气体 · 物理学 2019-05-22 Daisuke Inotani , Pieter van Wyk , Yoji Ohashi

We investigate the superconducting instability of a two-dimensional repulsive fermion gas with Rashba spin-orbit coupling $\al_R$. Using renormalization group approach, we find the superconducting transition temperature as a function of the…

超导电性 · 物理学 2013-11-13 Luyang Wang , Oskar Vafek

We theoretically investigate the spin-dipole oscillation of a strongly interacting Fermi gas in a harmonic trap. By using a combined diagrammatic strong-coupling theory with a local density approximation and a sum rule approach, we clarify…

量子气体 · 物理学 2020-01-22 Hiroyuki Tajima , Alessio Recati , Yoji Ohashi

We present an analytic description of ultracold collision between two spin-$\frac{1}{2}$ fermions with isotropic spin-orbit coupling of the Rashba type. We show that regardless of how weak the spin-orbit coupling may be, the ultracold…

原子物理 · 物理学 2013-05-22 Hao Duan , Li You , Bo Gao

We investigate the thermal physics of a Bose-Hubbard model with Rashba spin-orbit coupling starting from a strong coupling mean-field ground state. The essential role of the spin-orbit coupling $\left(\gamma\right)$ is to promote…

强关联电子 · 物理学 2019-05-22 Arijit Dutta , Abhishek Joshi , K. Sengupta , Pinaki Majumdar

This review focuses on recent developments on studying synthetic spin-orbit (SO) coupling in ultracold atomic gases. Two types of SO coupling are discussed. One is Raman process induced coupling between spin and motion along one of the…

量子气体 · 物理学 2015-02-12 Hui Zhai

We review the study of the superfluid phase transition in a system of fermions whose interaction can be tuned continuously along the crossover from Bardeen-Cooper-Schrieffer (BCS) superconducting phase to a Bose-Einstein condensate (BEC),…

量子气体 · 物理学 2021-05-06 Luca Dell'Anna , Stefano Grava

We investigate the effects of attractive Hubbard interaction on two-component fermionic atoms in narrow two-dimensional (2D) energy bands that exhibit Rashba spin-orbit coupling (SOC) in the presence of an applied Zeeman field. This…

量子气体 · 物理学 2024-08-30 T. D. Stanescu , Sumanta Tewari , V. W. Scarola

We theoretically investigate magnetic properties of a unitary Fermi gas in a harmonic trap. Including strong pairing fluctuations within the framework of an extended $T$-matrix approximation (ETMA), as well as effects of a trap potential…

量子气体 · 物理学 2016-01-27 Hiroyuki Tajima , Ryo Hanai , Yoji Ohashi

We study how the Rashba spin-orbit interaction influences unconventional superconductivity in a two dimensional electron gas partially spin-polarized by a magnetic field. Somewhat surprisingly, we find that for all field orientations, only…

超导电性 · 物理学 2016-07-01 Ethan Lake , Caleb Webb , D. A. Pesin , O. A. Starykh

We investigate the effects of topological order on the transition temperature, $T_c$, and response functions in fermionic superfluids with Rashba spin-orbit coupling and a transverse Zeeman field in three dimensions. Our calculations,…

量子气体 · 物理学 2016-05-10 Brandon M. Anderson , Chien-Te Wu , Rufus Boyack , K. Levin

We theoretically investigate strong-coupling properties of an odd-frequency Fermi superfluid. This pairing state has the unique property that Cooper pairs are formed between fermions, not at the same time, but at different times. To see…

量子气体 · 物理学 2024-06-18 Shumpei Iwasaki , Taira Kawamura , Koki Manabe , Yoji Ohashi

We present a systematic theoretical study of the BCS-BEC crossover in two-dimensional Fermi gases with Rashba spin-orbit coupling (SOC). By solving the exact two-body problem in the presence of an attractive short-range interaction we show…

量子气体 · 物理学 2012-04-04 Lianyi He , Xu-Guang Huang

We study the interplay effect of spin-orbit coupling(SOC) and optical lattice to the single-particle physics and superfluid-insulator transition in ultracold Fermi gases. We consider the type of SOC that has been realized in cold atoms…

量子气体 · 物理学 2015-10-28 Lihong Zhou , Xiaoling Cui

In this letter we study both ground state properties and the superfluid transition temperature of a spin-1/2 Fermi gas across a Feshbach resonance with a synthetic spin-orbit coupling, using mean-field theory and exact solution of two-body…

量子气体 · 物理学 2011-11-09 Zeng-Qiang Yu , Hui Zhai

We investigate theoretically how the proximity effect in superconductor/ferromagnet hybrid structures with intrinsic spin-orbit coupling manifests in the density of states and critical temperature. To describe a general scenario, we allow…

超导电性 · 物理学 2015-08-04 Sol H. Jacobsen , Jabir Ali Ouassou , Jacob Linder