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Motivated by observations of heterogeneous domain structure on the surface of cells and vesicles and by domain formation due to the adsorption of complex molecules onto composite membranes, we consider a minimal quasi 2D-model to describe…

软凝聚态物质 · 物理学 2022-02-02 Domenico Truzzolillo

We use an all-optical trap to confine a strongly attractive two-state mixture of lithium fermions. By measuring the rate of evaporation from the trap, we determine the effective elastic scattering cross section (4 PI a^2) to show that the…

原子物理 · 物理学 2009-11-06 K. M. O'Hara , M. E. Gehm , S. R. Granade , S. Bali , J. E. Thomas

We study the influence of anisotropy, treated as a dimensional crossover between 1D and 3D system, on the topological instability induced by a (self-consistent) uniaxial periodic potential. The mechanism on which the instability is based…

材料科学 · 物理学 2021-03-04 Marin Spaić , Danko Radić

We studied the magnetic field dependence of the inelastic decay of an ultracold, optically trapped 6-Li gas of different spin compositions. The spin mixture of the two lowest hyperfine states showed two decay resonances at 550 G and 680 G…

凝聚态物理 · 物理学 2009-11-07 K. Dieckmann , C. A. Stan , S. Gupta , Z. Hadzibabic , C. H. Schunck , W. Ketterle

We investigate the pairing physics in a three-component Fermi-Fermi mixture, where a few impurities are immersed in a non-interacting spin-$\frac{1}{2}$ Fermi gas with synthetic spin-orbit coupling (SOC), and interact attractively with one…

量子气体 · 物理学 2015-06-19 Lihong Zhou , Xiaoling Cui , Wei Yi

We analyze the phase structure of mass- and spin-imbalanced unitary Fermi gases in harmonic traps. To this end, we employ Density Functional Theory in the local density approximation. Depending on the values of the control parameters…

量子气体 · 物理学 2015-06-18 Jens Braun , Joaquín E. Drut , Thomas Jahn , Martin Pospiech , Dietrich Roscher

We study the properties of the Bose-Fermi mixture from the perspective of reaching a state of a self-bound quantum droplet. The variational analysis shows that the system exhibits bistability. For weak repulsion between bosons, one of the…

量子气体 · 物理学 2020-10-15 Tomasz Karpiuk , Mariusz Gajda , Mirosław Brewczyk

We discuss the possibility of a quantum phase transition in ultra-cold spin-polarized Fermi gases which exhibit a p-wave Feshbach resonance. We show that when fermionic atoms form a condensate that can be externally tuned between the BCS…

强关联电子 · 物理学 2009-11-11 S. S. Botelho , C. A. R. Sa de Melo

We follow the evolution of fermion pairing in the dimensional crossover from 3D to 2D as a strongly interacting Fermi gas of $^6$Li atoms becomes confined to a stack of two-dimensional layers formed by a one-dimensional optical lattice.…

We study the vortex structures of a two-component Fermi gas experiencing a uniform effective magnetic field in an anisotropic trap that interpolates between quasi-one dimensional (1D) and quasi-two dimensional (2D). At a fixed chemical…

量子气体 · 物理学 2012-06-19 Ran Wei , Erich J. Mueller

We study a problem of non-adiabatic superfluid dynamics of spin-orbit coupled neutral fermions in two spatial dimensions. We focus on the two cases when the out-of-equilibrium conditions are initiated either by a sudden change of the…

超导电性 · 物理学 2021-07-21 Maxim Dzero , Ammar A. Kirmani , Emil A. Yuzbashyan

The two-dimensional spin-imbalanced Fermi gas subject to s-wave pairing and spin-orbit coupling is considered a promising platform for realizing a topological chiral-p-wave superfluid. In the BCS limit of s-wave pairing, i.e., when Cooper…

量子气体 · 物理学 2022-11-18 K. Thompson , U. Zülicke , J. Brand

We unravel the correlated non-equilibrium dynamics of a mass balanced Bose-Fermi mixture in a one-dimensional optical lattice upon quenching an imposed harmonic trap from strong to weak confinement. Regarding the system's ground state, the…

量子物理 · 物理学 2018-06-06 P. Siegl , S. I. Mistakidis , P. Schmelcher

We theoretically investigate magnetic properties of a unitary Fermi gas in a harmonic trap. Including strong pairing fluctuations within the framework of an extended $T$-matrix approximation (ETMA), as well as effects of a trap potential…

量子气体 · 物理学 2016-01-27 Hiroyuki Tajima , Ryo Hanai , Yoji Ohashi

We consider a mixture of spin-1/2 bosons and fermions, where only the bosons are subjected to the spin-orbit coupling induced by Raman beams. The fermions, although not directly coupled to the Raman lasers, acquire an effective spin-orbit…

原子物理 · 物理学 2019-09-25 Chuanzhou Zhu , Li Chen , Hui Hu , Xia-Ji Liu , Han Pu

The superradiant phase transitions of one-dimensional correlated Fermi gases in a transversely driven optical cavity, under the umklapp condition that the cavity wave number is equal to two times the Fermi wave number, are studied with…

量子气体 · 物理学 2026-01-21 Jian-Song Pan

Interacting Fermi gases with equal populations but unequal masses are investigated at zero temperature using local density approximation and the hydrodynamic theory of superfluids in the presence of harmonic trapping. We derive the…

软凝聚态物质 · 物理学 2009-11-13 G. Orso , L. P. Pitaevskii , S. Stringari

We have experimentally demonstrated the absence of spectroscopic resonance shifts in a mixture of two interacting Fermi gases. This result is linked to observations in an ultracold gas of thermal bosons. There, the measured resonance shift…

软凝聚态物质 · 物理学 2007-05-23 Martin W. Zwierlein , Zoran Hadzibabic , Subhadeep Gupta , Wolfgang Ketterle

We investigate strong-coupling corrections to single-particle excitations in the normal state of a spin-polarized unitary Fermi gas. Within the framework of an extended T-matrix approximation, we calculate the single-particle density of…

量子气体 · 物理学 2015-06-17 Takashi Kashimura , Ryota Watanabe , Yoji Ohashi

We propose to use a two-species Fermi gas with the interspecies s-wave Feshbach resonance to realize p-wave superfluidity in two dimensions. By confining one species of fermions in a two-dimensional plane immersed in the background…

其他凝聚态物理 · 物理学 2009-03-12 Yusuke Nishida
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