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Finite-momentum superconductivity has become an important research topic in condensed matter physics. In particular, the orbital Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, which is stabi lized in atomically thin films by the orbital…

Superconductivity · Physics 2025-06-27 Michiya Chazono , Youichi Yanase

Angular dependent magnetothermal conductivity experiments on CeCoIn_5 indicate that this compound is a d-wave superconductor. In this study, the low-temperature behavior of the upper critical field is measured in a single crystal of…

Superconductivity · Physics 2009-11-10 Hyekyung Won , Kazumi Maki , Stephan Haas , Niels Oeschler , Franziska Weickert , Philipp Gegenwart

We show that Larkin-Ovchinnikov (LO) states with modulated superfluid order parameters have a considerably larger range of stability in a lattice than in the continuum. We obtain the phase diagram for the 3D cubic attractive Hubbard model…

Quantum Gases · Physics 2013-05-29 Y. L. Loh , N. Trivedi

The recent experimental support for the presence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase in the CeCoIn5 directed the attention towards the mechanisms responsible for this type of superconductivity. We investigate the FFLO state…

Superconductivity · Physics 2009-07-15 Andrzej Ptok , Maciej M. Maska , Marcin Mierzejewski

We study attractively interacting spin-1/2 fermions on the square lattice subject to a spin population imbalance. Using unbiased diagrammatic Monte Carlo simulations we find an extended region in the parameter space where the Fermi liquid…

Superconductivity · Physics 2016-09-07 Jan Gukelberger , Sebastian Lienert , Evgeny Kozik , Lode Pollet , Matthias Troyer

The properties of incommensurate antiferromagnetic (AFM) order in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is studied by solving the Bogoliubov-de-Gennes (BdG) equations. The relationship between the electronic structure and the…

Superconductivity · Physics 2015-05-27 Youichi Yanase , Manfred Sigrist

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

Time reversal symmetry breaking in superconductors, resulting from external magnetic fields or spontaneous magnetization, often leads to unconventional superconducting properties. In this way, a conventional Fulde-Ferrell-Larkin-Ovchinnikov…

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase in the vortex lattice state is quantitatively studied using the selfconsistent Eilenberger theory in three-dimensional (3D) space. We estimate free energy to determine the FFLO phase diagram…

Superconductivity · Physics 2011-12-06 Kenta M. Suzuki , Yasumasa Tsutsumi , Noriyuki Nakai , Masanori Ichioka , Kazushige Machida

We propose a new scheme for realizing Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) Cooper pairing states within flat bands, in contrast to the conventional paradigm such as the Zeeman effect. Central to our scheme is the concept of ``quantum…

Superconductivity · Physics 2025-12-23 Zi-Ting Sun , Ruo-Peng Yu , Shuai A. Chen , Jin-Xin Hu , K. T. Law

A Fulde-Ferrell-Larkin-Ovchinnkov (FFLO) state was previously reported in the quasi-2D heavy fermion CeCoIn5 when a magnetic field was applied parallel to the ab-plane. Here, we conduct 115^In NMR studies of this material in a PERPENDICULAR…

Superconductivity · Physics 2009-11-11 K. Kumagai , M. Saitoh , T. Oyaizu , Y. Furukawa , S. Takashima , M. Nohara , H. Takagi , Y. Matsuda

The question whether a spin-imbalanced Fermi gas can accommodate the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state has been the subject of intense study. This state, in which Cooper pairs obtain a nonzero momentum, has hitherto eluded…

Quantum Gases · Physics 2012-04-05 Jeroen P. A. Devreese , Michiel Wouters , Jacques Tempere

Stimulated by recent studies of superconductivity and magnetism with local and global broken inversion symmetry, we investigate the superconductivity in magnetic multipole states in locally noncentrosymmetric metals. We consider a…

Superconductivity · Physics 2016-06-09 Shuntaro Sumita , Youichi Yanase

It is shown theoretically that, in the superconducting state with $d_{x^2-y^2}$-pairing, a strong Pauli paramagnetic depairing (PD) induces not only the modulated Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state but also an…

Superconductivity · Physics 2015-05-19 Yuhki Hatakeyama , Ryusuke Ikeda

The realizations of spin-orbit coupling in cold atoms lead to a burst of research activities in the searching of topological matters in ultracold atom systems. The very recent theoretical predictions show that topological…

Mesoscale and Nanoscale Physics · Physics 2013-12-12 Chan Chun Fai , Gong Ming

We investigate pairing symmetry in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex state and vortex lattice, and explain the electronic structure in these states in terms of pairing symmetry. We show analytically that at the intersection…

Superconductivity · Physics 2015-05-13 Takehito Yokoyama , Masanori Ichioka , Yukio Tanaka

We present a full phase diagram for the one-dimensional (1D) to three-dimensional (3D) crossover of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in an attractive Hubbard model of 3D-coupled chains in a har- monic trap. We employ…

Quantum Gases · Physics 2012-05-25 Dong-Hee Kim , Päivi Törmä

We study the possibility of angular Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, in which the rotation symmetry is spontaneously broken, in population imbalanced fermion gases near the BCS-BEC crossover. We investigate the superfluid…

Other Condensed Matter · Physics 2015-05-13 Youichi Yanase

It is proposed that the spatially modulated superfluid phase, or the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state could be observed in resonant Fermion atomic condensates which are realized recently. We examine optimal experimental setups…

Superconductivity · Physics 2011-05-12 T. Mizushima , K. Machida , M. Ichioka

We discuss a detailed phase diagram and other microscopic characteristics on the applied magnetic field - temperature (H_a-T) plane for a simple model of correlated fluid represented by a two-dimensional (2D) gas of heavy quasiparticles…

Superconductivity · Physics 2011-09-09 Jan Kaczmarczyk , Jozef Spalek