Control of ultracold atoms with a chiral ferromagnetic film

Qin, Ren; Wang, Y.

doi:10.1103/physreva.99.013401

Cited by 4 publications

(8 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…-The existence of stable 2D SA solitons, including VRs, in a binary BEC formed by two atomic states φ ↑,↓ , resonantly coupled by the magnetic component H of the MW field, was predicted in ref. [33]. The respective system of scaled GP equations for φ ↑,↓ and the Poisson equation for H are [34]…”

Section: Numerical Resultsmentioning

confidence: 99%

“…The finding reported in ref. [33] is that eqs. ( 27) are exactly invariant with respect to a boost transformation, from the quiescent reference frame to one which moves, in the 2D plane (x, y), with vectorial acceleration a = (a x , a y ), combined with a constant velocity, V = (V x , V y ).…”

Section: Numerical Resultsmentioning

confidence: 99%

“…( 28)-( 31) are a generalization of the usual Galilean boost for the accelerating reference frame. Note that the solution of the 2D Poisson equation in system (27), with the source represented by a quiescent soliton, has the standard asymptotic form far from the region where the soliton is located (it is determined by 33) (as per [33]).…”

Section: Numerical Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Self-accelerating solitons

Malomed

2022

EPL

View full text Add to dashboard Cite

Basic models which give rise to one- and two-dimensional (1D and 2D) solitons, such as the Gross-Pitaevskii (GP)\ equations for BEC, feature the Galilean invariance, which makes it possible to generate families of moving solitons from quiescent ones. A challenging problem is to find models admitting stable self-accelerating (SA) motion of solitons. SA modes are known in linear systems in the form of Airy waves, but they are poorly localized states. This brief review presents two-component BEC models which make it possible to predict SA solitons. In one system, a pair of interacting 1D solitons with opposite signs of the effective mass is created in a binary BEC trapped in an optical-lattice potential. In that case, opposite interaction forces, acting on the solitons with positive and negative masses, produce equal accelerations, while the total momentum is conserved. The second model is based on a system of GP equations for two atomic components, which are resonantly coupled by a microwave field. The latter model produces an exact transformation to an accelerating references frame, thus predicting 1D and 2D stable SA solitons, including vortex rings.

show abstract

Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Self-accelerating solitons

Malomed

2022

EPL

View full text Add to dashboard Cite

show abstract

“…The magnetization configuration m(r) for a single magnetic skyrmion can be obtained by performing the microscopic magnetic simulations for the chiral ferromagnetic film, whose energy density functional is defined as [15][16][17][18][19]…”

Section: Trap With Single Skyrmionmentioning

confidence: 99%

“…Therefore, the skyrmion-based magnetic traps can be easily reconfigured and moved by modern spintronics techniques, which will be advantageous for practical applications. If fact, it has been proposed that several types of magnetic lattices for ultracold atoms can be constructed from the stray field of chiral ferromagnetic film in skyrmion lattice phase [19].…”

Section: Introductionmentioning

confidence: 99%

Skyrmion-based Magnetic Traps for Ultracold Atoms

Qin,

Wang

2020

Preprint

Self Cite

View full text Add to dashboard Cite

We show that the stray field generated by isolated magnetic skyrmions can be used to trap ultracold atoms. Specially, ring-shaped and double-well trapping potentials for ultracold atoms can be created by combining the field from two isolated skyrmions. The geometry size, potential barrier, trapping frequency and Majorana loss rate of these magnetic traps can be tuned by the external magnetic field or device configuration. The results here could be useful to develop atomtronics devices by manipulating the magnetic skyrmions with modern spintronics techniques.

show abstract

Bloch point nanospheres for the design of magnetic traps

Tejo,

Zambrano-Rabanal,

Carvalho-Santos

et al. 2023

Applied Physics Letters

View full text Add to dashboard Cite

Through micromagnetic simulations, this work analyzes the possibility of using an array of magnetic nanospheres hosting Bloch points (BPs) to compose a system with the features of a magnetic trap (MT). We show that a BP can be nucleated as a metastable configuration in a wide range of the nanosphere radius compared to a quasi-uniform and vortex state. We also show that the stabilized BP generates a quadrupolar magnetic field outside the nanosphere. Based on this fact, we analyze the field profile of different arrays of these nanospheres, showing that the obtained magnetic field profiles share the needed features to compose MTs. Some highlights of using an array of Bloch point nanospheres in MTs rely on the magnetic field gradients achieved, which are orders of magnitude higher than similar standard systems, and allow three-dimensional trapping. Our results could be useful in trapping particles through the intrinsic magnetization of ferromagnetic nanoparticles while avoiding the commonly used mechanisms associated with Joule heating.

show abstract

Control of ultracold atoms with a chiral ferromagnetic film

Cited by 4 publications

References 43 publications

Self-accelerating solitons

Self-accelerating solitons

Skyrmion-based Magnetic Traps for Ultracold Atoms

Bloch point nanospheres for the design of magnetic traps

Contact Info

Product

Resources

About