Magnetic domains in spinor Bose–Einstein condensates

Автор(и)

  • Michał Matuszewski Nonlinear Physics Center and ARC Center of Excellence for Quantum-Atom Optics, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia
  • Tristram J. Alexander Nonlinear Physics Center and ARC Center of Excellence for Quantum-Atom Optics, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia
  • Yuri S. Kivshar Nonlinear Physics Center and ARC Center of Excellence for Quantum-Atom Optics, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.3499231

Ключові слова:

Bose–Einstein condensates, homogeneous magnetic field, magnetic domains.

Анотація

We discuss the structure of spin-1 Bose–Einstein condensates in the presence of a homogenous magnetic field. We demonstrate that the phase separation can occur in the ground state of antiferromagnetic (polar) condensates, while the spin components of the ferromagnetic condensates are always miscible, and no phase separation occurs. Our analysis predicts that this phenomenon takes place when the energy of the lowest homogenous state is a concave function of the magnetization. We propose a method for generation of spin domains by adiabatic switching of the magnetic field. We also discuss the phenomena of dynamical instability and spin domain formation.

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Опубліковано

2010-08-04

Як цитувати

(1)
Michał Matuszewski, Tristram J. Alexander, and Yuri S. Kivshar, Magnetic domains in spinor Bose–Einstein condensates, Low Temp. Phys. 36, (2010) [Fiz. Nizk. Temp. 36, 883-890, (2010)] DOI: https://doi.org/10.1063/1.3499231.

Номер

Том 36 № 8-9 (2010)

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