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Dissipationless Spin Transport in Thin Film Ferromagnets
Jürgen König, Martin Chr. Bønsager, Allan H. MacDonald
Metallic thin film ferromagnets generically possess spiral states that carry dissipationless spin currents. We relate the critical values of these supercurrents to micromagnetic ma…
Theory of Ferromagnetism in Diluted Magnetic Semiconductors
Jürgen König, Hsiu-Hau Lin, Allan H. MacDonald
Carrier-induced ferromagnetism has been observed in several (III,Mn)V semiconductors. We review the theoretical picture of these ferromagnetic semiconductors that emerges from a mo…
Limits on the Curie temperature of (III,Mn)V ferromagnetic semiconductors
John Schliemann, Jürgen König, Hsiu-Hau Lin +1
Mean-field-theory predicts that the Curie temperature T_c of a (III,Mn)V ferromagnet will be proportional to the valence band density-of-states of its host (III,V) semiconductor, s…
Non-linear Transport in Quantum-Hall Smectics
A. H. MacDonald, Matthew P. A. Fisher
Recent transport experiments have established that two-dimensional electron systems with high-index partial Landau level filling, , have ground states w…