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A conventional superconducting state may be replaced by another dissipationless state hosting Cooper pairs with a finite momentum, leaving thermodynamic footprints for such a phase transition. Recently, a novel type of finite momentum…

The $d$-wave superconductor $\mathrm{CeCoIn_5}$ has been proposed as a strong candidate for supporting the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state near the low-temperature boundary of its upper critical field. Neutron diffraction,…

Superconductivity · Physics 2020-06-02 Shi-Zeng Lin , Duk Y. Kim , Eric D. Bauer , Filip Ronning , J. D. Thompson , Roman Movshovich

Motivated by recent NMR data suggesting the presence of a Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex lattice in magnetic fields perpendicular to the superconducting plane in the heavy-fermion superconductor CeCoIn5, we examine here the…

Superconductivity · Physics 2009-11-11 Ryusuke Ikeda

We theoretically explore a promising route to achieve the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in a spin-imbalanced ultracold Fermi gas. In the current stage of cold atom physics, search for this exotic Fermi superfluid is facing…

Quantum Gases · Physics 2022-09-30 Taira Kawamura , Yoji Ohashi

Motivated by a striking observation of a Fulde-Ferell-Larkin-Ovchinnikov (FFLO) vortex state in the heavy fermion material CeCoIn5 in fields {\it perpendicular} to the superconducting planes (${\bf H} \parallel c$), superconducting phase…

Superconductivity · Physics 2009-11-13 Ryusuke Ikeda

It is well-known that the orbital effect of the magnetic field suppresses superconducting $T_c$. We show that for a system, which is in the Larkin-Ovchinnikov-Fulde-Ferrell (FFLO) state at zero external magnetic field, the orbital effect of…

Superconductivity · Physics 2015-06-17 A. M. Bobkov , I. V. Bobkova

We study the phase diagram in a two-dimensional Fermi gas with the synthetic spin-orbit coupling that has recently been realized experimentally. In particular, we characterize in detail the properties and the stability region of the…

Quantum Gases · Physics 2013-10-11 Fan Wu , Guang-Can Guo , Wei Zhang , Wei Yi

It is predicted that a new class of systems - superconductor/normal metal (S/N) heterostructures can reveal the in-plane Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) instability under nonequilibrium conditions at temperatures close to the…

Superconductivity · Physics 2015-06-16 I. V. Bobkova , A. M. Bobkov

This study presents an investigation of the isotropic superconductor Ti4Ir2O, focusing on its magnetic field vs. temperature phase diagram near and above the Pauli limit for superconductivity. The data exhibits characteristic features that…

Superconductivity · Physics 2024-11-22 Jiaqi Hu , Yat Hei Ng , Omargeldi Atanov , Bin-Bin Ruan , Zhi-An Ren , Rolf Lortz

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is a superconducting phase characterized by broken translational-symmetry, where Cooper pairs form with non-zero momentum between Zeeman-split Fermi surfaces. This state is highly sensitive…

Superconductivity · Physics 2026-01-27 X. Y. Liu , Z. Kao , J. Luo , J. Yang , A. F. Fang , J. Zhao , R. Zhou , Guo-qing Zheng

Clean superconductors with weakly coupled conducting planes have been suggested as promising candidates for observing the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. We consider here a layered superconductor in a magnetic field of…

Superconductivity · Physics 2007-05-23 U. Klein , D. Rainer , H. Shimahara

We show that nonuniform superconductors of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) type conduct electric current in the way which is very different from the usual case. We discuss both equilibrium and nonequilibrium properties using a…

Superconductivity · Physics 2017-12-13 K. V. Samokhin , B. P. Truong

The first observation of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state and a subsequent detection of the spin-dependent effective masses of quasiparticles in the CeCoIn_5 heavy fermion system are combined into a single…

Strongly Correlated Electrons · Physics 2008-09-11 J. Spalek , M. Maska , M. Mierzejewski , J. Kaczmarczyk

Fe-based superconductors (FeSC) exhibit all the properties of systems that allow the formation of a superconducting phase with oscillating order parameter, called the Fulde--Ferrell--Larkin--Ovchinnikov (FFLO) phase. By the analysis of the…

Superconductivity · Physics 2013-11-19 Andrzej Ptok , Dawid Crivelli

Fulde-Ferrell (FF) Larkin-Ovchinnikov (LO) phases were proposed for superconductors or superfluids in strong magnetic field. With the experimental progresses in ultracold atomic systems, topological FFLO phases has also been put forward,…

Quantum Gases · Physics 2017-06-21 Long-Fei Guo , Peng Li , Su Yi

We theoretically investigate superconductivity under a spin-split band structure owing to a collinear-type antiferromagnetic order in quasi-two-dimensional organic compounds $\kappa$-(BEDT-TTF)$_2X$. We find that the magnetic order can…

Superconductivity · Physics 2023-11-28 Shuntaro Sumita , Makoto Naka , Hitoshi Seo

We study the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) superconducting state in the disordered systems. We analyze the microscopic model, in which the d-wave superconductivity is stabilized near the antiferromagnetic quantum critical point,…

Superconductivity · Physics 2015-05-13 Youichi Yanase

Electronic structure and the shape of the Fermi surface are known to be of fundamental importance for the superconducting instability in real materials. We demonstrate that such an instability may be explored by static Cooper pair…

Superconductivity · Physics 2017-10-06 Andrzej Ptok , Konrad J. Kapcia , Przemysław Piekarz , Andrzej M. Oleś

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state can be found in layered d-wave superconductors such as high $T_c$ cuprates and $\kappa$-(ET)$_2$ salts in a planar magnetic field. We show the superconducting order parameter forms two…

Superconductivity · Physics 2007-05-23 H. Won , K. Maki

In this work, the thermodynamic properties of the organic superconductor $\lambda$-(BETS)$_2$GaCl$_4$ are investigated to study a high-field superconducting state known as the putative Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase. We…

Superconductivity · Physics 2021-06-16 Shusaku Imajo , Takuya Kobayashi , Atsushi Kawamoto , Koichi Kindo , Yasuhiro Nakazawa