124 citations · 373 across the 9 of their papers we have counts for
9 papers
Critical Energy Dissipation in a Binary Superfluid Gas by a Moving Magnetic Obstacle
Joon Hyun Kim, Deokhwa Hong, Kyuhwan Lee +1
We study the critical energy dissipation in an atomic superfluid gas with two symmetric spin components by an oscillating magnetic obstacle. Above a certain critical oscillation fr…
Crossover from weak to strong quench in a spinor Bose-Einstein condensate
Seji Kang, Deokhwa Hong, Joon Hyun Kim +1
We investigate the early-time dynamics of a quasi-two-dimensional spin-1 antiferromagnetic Bose-Einstein condensate after a sudden quench from the easy-plane to the easy-axis polar…
Observation of Two Sound Modes in a Binary Superfluid Gas
Joon Hyun Kim, Deokhwa Hong, Yong-il Shin
We study the propagation of sound waves in a binary superfluid gas with two symmetric components. The binary superfluid is constituted using a Bose-Einstein condensate of Na…
Metastable hard-axis polar state of a spinor Bose-Einstein condensate under a magnetic field gradient
Joon Hyun Kim, Deokhwa Hong, Seji Kang +1
We investigate the stability of a hard-axis polar state in a spin-1 antiferromagnetic Bose-Einstein condensate under a magnetic field gradient, where the easy-plane spin anisotropy…
Critical spin superflow in a spinor Bose-Einstein condensate
Joon Hyun Kim, Sang Won Seo, Yong-il Shin
We investigate the critical dynamics of spin superflow in an easy-plane antiferromagnetic spinor Bose-Einstein condensate. Spin-dipole oscillations are induced in a trapped condens…
Emergence and scaling of spin turbulence in quenched antiferromagnetic spinor Bose-Einstein condensates
Seji Kang, Sang Won Seo, Joon Hyun Kim +1
We investigate the phase transition dynamics of a quasi-2D antiferromagnetic spin-1 Bose-Einstein condensate from the easy-axis polar phase to the easy-plane polar phase, which is…