Controlled creation and decay of singly-quantized vortices in a polar magnetic phase

Controlled creation and decay of singly-quantized vortices in a polar magnetic phase
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极地磁相中单量子化涡旋的受控产生和衰减

DOI:
10.1038/s42005-021-00554-y
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发表时间:
2021
影响因子:
5.5
通讯作者:
Hall, D. S.
Hall, D. S.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Xiao, Y.;Borgh, M. O.;Weiss, L. S.;Blinova, A. A.;Ruostekoski, J.;Hall, D. S.

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Quantized vortices appear in physical systems from superfluids and superconductors to liquid crystals and high energy physics. Unlike their scalar cousins, superfluids with complex internal structure can exhibit rich dynamics of decay and even fractional vorticity. Here, we experimentally and theoretically explore the creation and time evolution of vortex lines in the polar magnetic phase of a trapped spin-187Rb Bose–Einstein condensate. A process of phase-imprinting a nonsingular vortex, its decay into a pair of singular spinor vortices, and a rapid exchange of magnetic phases creates a pair of three-dimensional, singular singly-quantized vortex lines with core regions that are filled with atoms in the ferromagnetic phase. Atomic interactions guide the subsequent vortex dynamics, leading to core structures that suggest the decay of the singly-quantized vortices into half-quantum vortices.
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