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We investigate, in three spatial dimensions, the transition from the normal state to the Fulde-Ferrel-Larkin-Ovchinnikov superfluid phases. We make use of a Fourier expansion for the order parameter and the Green's functions to handle the…

Superconductivity · Physics 2010-07-23 C. Mora , R. Combescot

We explore, in three spatial dimensions, the transition from the normal state to the Fulde-Ferrel-Larkin-Ovchinnikov superfluid phases. We restrict ourselves to the case of the 'planar' phase, where the order parameter depends only on a…

Superconductivity · Physics 2010-07-23 R. Combescot , C. Mora

We explore analytically the nature of the transition to the Fulde-Ferrel-Larkin-Ovchinnikov superfluid phases in the vicinity of the tricritical point, where these phases begin to appear. We make use of an expansion of the free energy up to…

Superconductivity · Physics 2015-06-24 R. Combescot , C. Mora

We investigate, mostly analytically, the nature of the Fulde-Ferrell- Larkin-Ovchinnikov superfluid phases for an isotropic two-dimensional superconductor, which is relevant for the experimental observation of these phases. We show that…

Superconductivity · Physics 2009-11-10 C. Mora , R. Combescot

We explore the nature of the transition to the Fulde-Ferrell-Larkin- Ovchinnikov superfluid phases in the low temperature range in two dimensions, for the simplest isotropic BCS model. This is done by applying the Larkin-Ovchinnikov…

Superconductivity · Physics 2010-07-23 R. Combescot , C. Mora

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 demonstrate that the vortex state in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase may be very different depending on the field orientation relative to the crystalline axes. We calculate numerically the upper critical field near the…

Superconductivity · Physics 2015-06-11 V. H. Dao , D. Denisov , A. Buzdin , J. P. Brison

We calculate the zero temperature phase diagram of a polarized two-component Fermi gas in an array of weakly-coupled parallel one-dimensional (1D) 'tubes' produced by a two-dimensional optical lattice. Increasing the lattice strength drives…

Other Condensed Matter · Physics 2009-11-13 Meera M. Parish , Stefan K. Baur , Erich J. Mueller , David A. Huse

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

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

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase was first predicted in 2D superconductors about 50 years ago, but so far unambiguous experimental evidences are still lacked. The recently experimentally realized spin-imbalanced Fermi gases…

Superconductivity · Physics 2015-03-20 Zhen Zheng , Ming Gong , Xubo Zou , Chuanwei Zhang , Guangcan Guo

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is examined in quasi-one-dimensional s-wave and d-wave superconductors with particular attention paid to the effect of the Fermi-surface anisotropy. The upper critical field $H_{c2}(T)$ is…

Superconductivity · Physics 2015-06-18 Nobumi Miyawaki , Hiroshi Shimahara

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase, a superconducting state with non-zero total momentum Cooper pairs in a strong magnetic field, was predicted more than 50 years ago and now becomes an important concept in many branches of…

Quantum Gases · Physics 2016-03-29 Zhen Zheng , Ming Gong , Yichao Zhang , Xubo Zou , Chuanwei Zhang , Guangcan Guo

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

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 the behaviour of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductors near a surface is considerably different from the usual case. The order parameter of the FF state is strongly deformed near the surface, which leads…

Superconductivity · Physics 2019-01-09 K. V. Samokhin , B. P. Truong

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 Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state is a superconducting state stabilized by a large Zeeman splitting between up- and down-spin electrons in a singlet superconductor. In the absence of disorder, the superconducting order…

Superconductivity · Physics 2010-11-05 Qinghong Cui , Kun Yang

We derive a generalized Ginzburg-Landau (GL) functional near the tricritical point in the (T,H)-phase diagram for the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconducting state, in 1,2, and 3 dimensions. We find that the transition from…

Superconductivity · Physics 2016-08-31 A. I. Buzdin , H. Kachkachi
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