Influence of External Magnetic Fields on Tunneling of Spin-1 Bose Condensate |
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Authors: | YU Zhao-Xian JIAO Zhi-Yong SUN
Jin-Zuo |
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Institution: | 1. Department of Applied Physics, University of Petroleum
(East China), Dongying 257061, China
;2. Department of Physics, Yantai University, Yantai 264005, China |
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Abstract: | In this letter, we have studied the influence of the external magnetic fields on tunneling of the spin-1 Bose
condensate. We find that the population transfer between spin-0
and spin-±1 exhibits the step structure under the external
cosinusoidal magnetic field and a combination of static and
cosinusoidal one, respectively. Compared with the longitudinal
component of the external magnetic field, the smaller the
transverse component of the magnetic field is, the larger the
time scale of exhibiting the step structure does. The tunneling
current may exhibit periodically oscillation behavior when the
ratio of the transverse component of the magnetic field is smaller
than that of the longitudinal component, otherwise it exhibits a
damply oscillating behavior. This means that the dynamical spin
localization can be adjusted by the external magnetic fields. |
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Keywords: | tunneling population transfer spinor Bose condensate |
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