Microscopic Eilenberger theory of Fulde-Ferrell-Larkin-Ovchinnikov states in the presence of vortices

Suzuki, Kenta; Machida, Kazushige; Ichioka, Masanori

doi:10.1103/physrevb.101.214516

Cited by 5 publications

(2 citation statements)

References 82 publications

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“…The difficulties in the interpretation triggered many studies targeted into a better understating of the coexistence of vortex lattice states and FFLO state. The studies include considerations of setups with single vortex line [22][23][24][25][26] as well as the setups with vortex lattices [27][28][29][30][31][32]. Due to energetic reasons, the vortices tend to form triangular structures, while the nodal lines in the FFLO state prefer other geometries, where the most natural are square lattices emerging for ∆(x, y) ∼ cos(q x x) cos(q y y).…”

Section: Introductionmentioning

confidence: 99%

Vortex lattice in spin-imbalanced unitary Fermi gas

Kopyciński,

Pudełko,

Wlazłowski

2021

Preprint

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We investigate the properties of a spin-imbalanced and rotating unitary Fermi gas. Using a density functional theory (DFT), we provide insight into states that emerge as a result of a competition between Abrikosov lattice formation, spatial phase separation and the emergence of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. A confrontation of the experimental data [M. Zwierlein et al., Science 311, 492 (2006)] with theoretical predictions provides a remarkable qualitative agreement. In case of gas confined in a harmonic trap, the phase separation into a superfluid core populated by the Abrikosov lattice and a spin-polarized corona is the dominant process. Changing confinement to a box-like trap, reverts the spatial location of the component: gas being in the normal state is surrounded by superfluid threaded by quantum vortices. The vortex lattice no longer exhibits the triangular symmetry, and emergence of exotic geometries may be an indirect signature of the FFLO-like state formation in the system.

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Section: Introductionmentioning

confidence: 99%

Vortex lattice in spin-imbalanced unitary Fermi gas

Kopyciński,

Pudełko,

Wlazłowski

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The difficulties in the interpretation triggered many studies targeted at a better understating of the coexistence of vortex lattice states and FFLO state. The studies include considerations of setups with a single vortex line [22][23][24][25][26] as well as the setups with vortex lattices [27][28][29][30][31][32]. Due to energetic reasons, the vortices tend to form triangular structures.…”

Section: Introductionmentioning

confidence: 99%

Vortex lattice in spin-imbalanced unitary Fermi gas

2021

View full text Add to dashboard Cite

We investigate the properties of a spin-imbalanced and rotating unitary Fermi gas. Using a density functional theory, we provide insight into states that emerge from a competition between Abrikosov lattice formation, spatial phase separation, and the emergence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. A confrontation of the experimental data [M. Zwierlein et al., Science 311, 492 (2006)] with theoretical predictions provides a remarkable qualitative agreement. In the case of gas confined in a harmonic trap, the phase separation into a superfluid core populated by the Abrikosov lattice and a spin-polarized corona is the dominant process. Changing confinement to a boxlike trap reverts the spatial location of the component: gas being in the normal state is surrounded by superfluid threaded by quantum vortices. The vortex lattice no longer exhibits the triangular symmetry, and the emergence of exotic geometries may be an indirect signature of the FFLO-like state formation in the system.

show abstract