Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Physics Letters

A Realistic Model for Observing Spin-Balanced Fulde-Ferrell Superfluid in Honeycomb Lattices

黄备兵

Published Jan 1, 2016• 0 citations
OpenAlex

Abstract

纺纱轨道联合的联合(SOC ) 和在里面飞机 Zeeman 地打破时间颠倒和费密气体的倒置对称并且成为一个流行方法生产单个飞机波浪 Fulde-Ferrell (FF ) 超流体。然而，原子损失并且与 SOC 有关加热阻碍了 FF 状态的成功的观察直到现在。在这个工作，没有 SOC 和 Zeeman 地，我们在一个蜂房格子建议平衡纺纱的 FF 超流体的实现。我们的计划的关键成分由期刊开车在原来的蜂房格子正在产生复杂跳跃术语。在我们的模型，扎根的状态总是是 FF 状态，因此，试验性的观察没有好调节的需要。我们的计划的另外的优点是它的简洁和可行性，并且可以因此为观察 FF 超流体打开一条新线路。

Related papers

Spin-balanced Fulde-Ferrell superfluids in driven fermionic optical lattices

Zhen Zheng, Chunlei Qu, Xu‐Bo Zou +1 more

Bulletin of the American Physical Society•Mar 2, 2015•0 citations

A Realistic Model for Observing Spin-Balanced Fulde–Ferrell Superfluid in Honeycomb Lattices

Beibing Huang

The combination of spin-orbit coupling (SOC) and in-plane Zeeman field breaks time-reversal and inversion symmetries of Fermi gases and becomes a popular way to produce single plane wave Fulde–Ferrell (FF) superfluid. However, atom loss and heating related to SOC have impeded the successful observation of FF state until now. In this work, we propose the realization of spin-balanced FF superfluid in a honeycomb lattice without SOC and the Zeeman field. A key ingredient of our scheme is generating complex hopping terms in original honeycomb lattices by periodical driving. In our model the ground state is always the FF state, thus the experimental observation has no need of fine tuning. The other advantages of our scheme are its simplicity and feasibility, and thus may open a new route for observing FF superfluids.

Chinese Physics Letters•Aug 1, 2016•0 citations

Superfluid weight and Berezinskii–Kosterlitz–Thouless temperature of spin-imbalanced and spin–orbit-coupled Fulde–Ferrell phases in lattice systems

Aleksi Julku, Long Liang, Päivi Törmä

We study the superfluid weight D s and Berezinskii–Kosterlitz–Thouless (BKT) transition temperatures T BKT in case of exotic Fulde–Ferrell (FF) superfluid states in lattice systems. We consider spin-imbalanced systems with and without spin–orbit coupling (SOC) accompanied with in-plane Zeeman field. By applying mean-field theory, we derive general equations for D s and T BKT in the presence of SOC and the Zeeman fields for 2D Fermi–Hubbard lattice models, and apply our results to a 2D square lattice. We show that conventional spin-imbalanced FF states without SOC can be observed at finite temperatures and that FF phases are further stabilized against thermal fluctuations by introducing SOC. We also propose how topologically non-trivial SOC-induced FF phases could be identified experimentally by studying the total density profiles. Furthermore, the relative behavior of transverse and longitudinal superfluid weight components and the role of the geometric superfluid contribution are discussed.

arXiv:1804.11063•New Journal of Physics•Aug 7, 2018•7 citations

From 2D semimetal to topological Fulde-Ferrell superfluid in fermionic ultracold atoms

Ting Fung Jeffrey Poon, Xiong-Jun Liu

Bulletin of the American Physical Society•Mar 15, 2017•0 citations

Boson-Fermion mixture and superconducting phases on the honeycomb lattice

Doron L. Bergman, Peter P. Orth, Karyn Le Hur

Bulletin of the American Physical Society•Mar 14, 2008•0 citations

Topological Fulde-Ferrell superfluids in triangular lattices

Long-Fei Guo, Peng Li, Su Yi

Fulde-Ferrell (FF) Larkin-Ovchinnikov (LO) phases were proposed for superconductors or superfluids in a strong magnetic field. With the experimental progress in ultracold atomic systems, topological FFLO phases have also been put forward since it is a natural consequence of realizable spin-orbital coupling (SOC). In this paper, we theoretically investigate a triangular lattice model with SOC and an in-plane field. By constructing the phase diagram, we show that it produces gapped and gapless topological FF phases with Chern numbers $C=\ifmmode\pm\else\textpm\fi{}1,\phantom{\rule{0.28em}{0ex}}\ifmmode\pm\else\textpm\fi{}2,\phantom{\rule{0.28em}{0ex}}\ensuremath{-}3$, and $\ensuremath{-}4$. We get the phase boundaries by the change in the sign of the Pfaffian. The chiral edge states for different topological FF phases also are elucidated.

arXiv:1701.04296•Physical Review A•Jun 16, 2017•2 citations
纺纱轨道联合的联合(SOC ) 和在里面飞机 Zeeman 地打破时间颠倒和费密气体的倒置对称并且成为一个流行方法生产单个飞机波浪 Fulde-Ferrell (FF ) 超流体。然而，原子损失并且与 SOC 有关加热阻碍了 FF 状态的成功的观察直到现在。在这个工作，没有 SOC 和 Zeeman 地，我们在一个蜂房格子建议平衡纺纱的 FF 超流体的实现。我们的计划的关键成分由期刊开车在原来的蜂房格子正在产生复杂跳跃术语。在我们的模型，扎根的状态总是是 FF 状态，因此，试验性的观察没有好调节的需要。我们的计划的另外的优点是它的简洁和可行性，并且可以因此为观察 FF 超流体打开一条新线路。
The combination of spin-orbit coupling (SOC) and in-plane Zeeman field breaks time-reversal and inversion symmetries of Fermi gases and becomes a popular way to produce single plane wave Fulde–Ferrell (FF) superfluid. However, atom loss and heating related to SOC have impeded the successful observation of FF state until now. In this work, we propose the realization of spin-balanced FF superfluid in a honeycomb lattice without SOC and the Zeeman field. A key ingredient of our scheme is generating complex hopping terms in original honeycomb lattices by periodical driving. In our model the ground state is always the FF state, thus the experimental observation has no need of fine tuning. The other advantages of our scheme are its simplicity and feasibility, and thus may open a new route for observing FF superfluids.
We study the superfluid weight D s and Berezinskii–Kosterlitz–Thouless (BKT) transition temperatures T BKT in case of exotic Fulde–Ferrell (FF) superfluid states in lattice systems. We consider spin-imbalanced systems with and without spin–orbit coupling (SOC) accompanied with in-plane Zeeman field. By applying mean-field theory, we derive general equations for D s and T BKT in the presence of SOC and the Zeeman fields for 2D Fermi–Hubbard lattice models, and apply our results to a 2D square lattice. We show that conventional spin-imbalanced FF states without SOC can be observed at finite temperatures and that FF phases are further stabilized against thermal fluctuations by introducing SOC. We also propose how topologically non-trivial SOC-induced FF phases could be identified experimentally by studying the total density profiles. Furthermore, the relative behavior of transverse and longitudinal superfluid weight components and the role of the geometric superfluid contribution are discussed.
Fulde-Ferrell (FF) Larkin-Ovchinnikov (LO) phases were proposed for superconductors or superfluids in a strong magnetic field. With the experimental progress in ultracold atomic systems, topological FFLO phases have also been put forward since it is a natural consequence of realizable spin-orbital coupling (SOC). In this paper, we theoretically investigate a triangular lattice model with SOC and an in-plane field. By constructing the phase diagram, we show that it produces gapped and gapless topological FF phases with Chern numbers $C=\ifmmode\pm\else\textpm\fi{}1,\phantom{\rule{0.28em}{0ex}}\ifmmode\pm\else\textpm\fi{}2,\phantom{\rule{0.28em}{0ex}}\ensuremath{-}3$, and $\ensuremath{-}4$. We get the phase boundaries by the change in the sign of the Pfaffian. The chiral edge states for different topological FF phases also are elucidated.