Journal
PHYSICAL REVIEW X
Volume 7, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevX.7.021023
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Funding
- National Science Foundation [PHY-1519174]
- Academy of Finland through its Centres of Excellence Program [251748, 284621, 308071]
- European Research Council [681311]
- Magnus Ehrnrooth Foundation
- Education Network in Condensed Matter and Materials Physics
- KAUTE Foundation through its Researchers Abroad program
- CSC-IT Center for Science Ltd. [ay2090]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1519174] Funding Source: National Science Foundation
- Academy of Finland (AKA) [308071, 308071] Funding Source: Academy of Finland (AKA)
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We experimentally observe the decay dynamics of deterministically created isolated monopoles in spin-1 Bose-Einstein condensates. As the condensate undergoes a change between magnetic phases, the isolated monopole gradually evolves into a spin configuration hosting a Dirac monopole in its synthetic magnetic field. We characterize in detail the Dirac monopole by measuring the particle densities of the spin states projected along different quantization axes. Importantly, we observe the spontaneous emergence of nodal lines in the condensate density that accompany the Dirac monopole. We also demonstrate that the monopole decay accelerates in weaker magnetic field gradients.
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