Friday, April 19, 2013

1304.5103 (Kira Riedl et al.)

Spontaneous ferromagnetism in the spinor Bose gas with Rashba spin-orbit

Kira Riedl, Casper Drukier, Peter Zalom, Peter Kopietz
We show that in the two-component Bose gas with Rashba spin-orbit coupling an arbitrarily small attractive interaction between bosons with opposite spin induces spontaneous ferromagnetism below a finite critical temperature $T_c$. In the ferromagnetic phase the single-particle spectrum exhibits a unique minimum in momentum space in the direction of the magnetization. For sufficiently small temperatures below $T_c$ the bosons eventually condense into the unique state at the bottom of the spectrum, forming a ferromagnetic Bose-Einstein condensate.
View original:

No comments:

Post a Comment