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Experimental evidence suggests that the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state may be realized in the unconventional, heavy-fermion superconductor CeCoIn$_5$. We present a self-consistent calculation of the field versus temperature…

Superconductivity · Physics 2007-05-23 A. B. Vorontsov , J. A. Sauls , M. J. Graf

Exotic superconductivity is formed by unconventional electron pairing and exhibits various unique properties that cannot be explained by the basic theory. The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is known as an exotic…

Superconductivity · Physics 2022-10-05 Shusaku Imajo , Toshihiro Nomura , Yoshimitsu Kohama , Koichi Kindo

Recently some experimental evidences have been obtained in favour of the existence of the inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state in heavy-fermion superconductor CeCoIn_{5} and organic superconductor…

Superconductivity · Physics 2008-02-21 Francois Konschelle , Jerome Cayssol , Alexandre I. Buzdin

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

We have studied the distinctive features of the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) instability and phase transitions in two--dimensional (2D) mesoscopic superconductors placed in magnetic field of arbitrary orientation and rotating…

Quantum Gases · Physics 2015-05-19 A. V. Samokhvalov , A. S. Mel'nikov , A. I. Buzdin

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

The crystal structure determines both the Fermi surface and pairing symmetry of the superconducting metals. It is demonstrated in the framework of the general phenomenological approach that this is of the primary importance for the…

Superconductivity · Physics 2009-11-13 D. Denisov , A. Buzdin , H. Shimahara

We review the concepts and the present state of theoretical studies of spin-imbalanced superfluidity, in particular the elusive Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state, in the context of ultracold quantum gases. The comprehensive…

Quantum Gases · Physics 2019-04-30 Jami J. Kinnunen , Jildou E. Baarsma , Jani-Petri Martikainen , Päivi Törmä

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

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in quasi-one-dimensional systems with warped Fermi surfaces is examined in strong parallel magnetic fields. It is shown that the state is extremely stable for field directions around…

Superconductivity · Physics 2018-07-10 Katsumi Itahashi , Hiroshi Shimahara

Effect of the phase fluctuations of the order parameter on the stability of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states are examined in exactly two-dimensional (2D) type-II superconductors with cylindrically symmetric Fermi surface…

Superconductivity · Physics 2015-06-24 Hiroshi Shimahara

We examine the possible phase diagram in an $H$-$T$ plane for Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states in a two-band Pauli-limiting superconductor. We here demonstrate that, as a result of the competition of two different modulation…

Superconductivity · Physics 2014-01-21 Takeshi Mizushima , Masahiro Takahashi , Kazushige Machida

We elaborate on boundary conditions for Ginzburg-Landau (GL) theory in the case of external currents. We implement a self-consistent theory within the finite element method (FEM) and present numerical results for a two-dimensional…

Superconductivity · Physics 2012-11-09 M. Ogren , M. P. Soerensen , N. F. Pedersen

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state can emerge in superconductors for which the orbital critical field exceeds the Pauli limit. Here, we present angular-resolved specific-heat data of the quasi-two-dimensional organic…

Superconductivity · Physics 2022-08-10 Tommy Kotte , Hannes Kühne , John A Schlueter , Gertrud Zwicknagl , J. Wosnitza

We study the phase transition between the normal and non-uniform (Fulde-Ferrell-Larkin-Ovchinnikov) superconducting state in quasi two-dimensional d-wave superconductors at finite temperature. We obtain an appropriate Ginzburg-Landau theory…

Superconductivity · Physics 2009-11-10 Denis Dalidovich , Kun Yang

We study the effect of a parallel magnetic field in a thin and small superconductor. The field suppresses superconductivity through Zeeman coupling while stabilizes the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state at high fields before…

Superconductivity · Physics 2019-02-21 Tom Kim , Chih-Chun Chien , Shi-Zeng Lin

We study theoretically the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states appearing locally in a superconducting thin film with a small circular magnetic cluster. The pair potential, the pairing correlations, the free-energy density, and…

Superconductivity · Physics 2023-08-16 Shu-Ichiro Suzuki , Takumi Sato , Alexander A. Golubov , Yasuhiro Asano

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

We discuss the ground state properties of the system composed of a normal metal sandwiched between ferromagnet and superconductor within a tight binding Hubbard model. We have solved the spin-polarized Hartree-Fock-Gorkov equations together…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. Krawiec , J. F. Annett , B. L. Gyorffy

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