NOTES
References:
1.
Topological magnetic solitons in the two-dimensional Mott-Hubbard gap
by Sajeev John and A. Golubentsev, PRL 71, 3343 (1993) (
PDF file
).
2.
Spin flux and magnetic solitons in an interacting two-dimensional electron gas: Topology of two-valued wave functions
by Sajeev John and A. Golubentsev, PRB 51, 381 (1995) (
PDF file
).