We investigate tunneling properties of collective spin-wave excitations in the polar state of a spin-1 spinor Bose-Einstein condensate. Within the mean-field theory at T = 0, we show that when the condensate is in the critical supercurrent state, the spin wave mode exhibits perfect transmission through a nonmagnetic potential barrier in the low energy limit, unless the strength of a spin-independent interaction co equals that of a spin-dependent interaction co Such an anomalous tunneling behavior is absent in the case of a magnetic barrier. We also clarify a scaling law of the transmission probability as a function of the mode energy.
|Journal of Physics: Conference Series
|Published - 2012
|26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 2011 Aug 10 → 2011 Aug 17
ASJC Scopus subject areas
- General Physics and Astronomy