A new multi-component BEC:
F=2 Na BEC
A. Görlitz, T.L. Gustavson, A.E. Leanhardt, R. Löw, A.P. Chikkatur, S. Gupta, S. Inouye, D.E. Pritchard, and W. Ketterle:
Sodium Bose-Einstein Condensates in the F=2 State in a Large-volume Optical Trap.
Phys. Rev. Lett. 90, 090401 (2003).
Link

Spinor tunneling
D.M. Stamper-Kurn, H.-J. Miesner, A.P. Chikkatur, S. Inouye, J. Stenger, and W. Ketterle:
Quantum tunneling across spin domains in a Bose-Einstein condensate.
Phys. Rev. Lett. 83, 661-665 (1999).
Link

Metastable spinor BEC
H.-J. Miesner, D.M. Stamper-Kurn, J. Stenger, S. Inouye, A.P. Chikkatur, and W. Ketterle:
Observation of metastable states in spinor Bose-Einstein condensates.
Phys. Rev. Lett. 82, 2228-2231 (1999).
Link

Spinor condensates
J. Stenger, S. Inouye, D.M. Stamper-Kurn, H.-J. Miesner, A.P. Chikkatur, and W. Ketterle:
Spin domains in ground state spinor Bose-Einstein condensates.
Nature 396, 345-348 (1998).
Link

First evidence for spinor condensates:
Optical trap for a condensate
D.M. Stamper-Kurn, M.R. Andrews, A.P. Chikkatur, S. Inouye, H.-J. Miesner, J. Stenger, and W. Ketterle:
Optical confinement of a Bose-Einstein condensate.
Phys. Rev. Lett. 80, 2027-2030 (1998).
Link