影响因子：0.0

DOI码：10.1103/5lsf-kktm

发表刊物：Phys. Rev. A

摘要：We present a comprehensive theoretical study of linear wave scattering from magnetic domain walls with varied twist angles Θ in spin-1/2 Bose-Einstein condensates (BECs). Using a gauge transformation, we show that scattering observables depend solely on the total twist Θ, independent of chirality. Within the Bogoliubov–de Gennes (BdG) framework, we develop a transfer-matrix method to compute reflection and transmission coefficients for incident phonons and free particles. Our results reveal a scattering threshold at the Zeeman energy 𝐸=ℏ⁢Ω0, separating a pure phonon regime from multichannel scattering involving both collective and single-particle excitations above threshold. Above a critical twist angle Θ𝑐, the effective spin rotation deviates from the imposed twist angle, leading to comb-like density modulations and Fano-like resonances below the threshold ℏ⁢Ω0. The transition probability between phonon and particle channels is strongly tunable with Θ<Θ𝑐, enhanced for odd multiples of 𝜋 but suppressed for even multiples. These findings establish twist-engineered domain walls as a versatile platform for controlling quantum transport, with implications for atomtronic devices and quantum simulation.

卷号：113

页面范围：043313

是否译文：否

发表时间：2026-03-24

发布期刊链接：https://doi.org/10.1103/5lsf-kktm