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Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells
Manuel Bejar, David Sanchez, Gloria Platero +1
We study the spin and charge dynamics of electrons in n-doped II--VI semiconductor multiple quantum wells when one or more quantum wells are doped with Mn. The interplay between st…
Theoretical models of ferromagnetic III-V semiconductors
T. Jungwirth, Jairo Sinova, J. Kučera +1
Recent materials research has advanced the maximum ferromagnetic transition temperature in semiconductors containing magnetic elements toward room temperature. Reaching this goal w…
Magnetization orientation dependence of the quasiparticle spectrum and hysteresis in ferromagnetic metal nanoparticles
A. Cehovin, C. M. Canali, A. H. MacDonald
We use a microscopic Slater-Koster tight-binding model with short-range exchange and atomic spin-orbit interactions that realistically captures generic features of ferromagnetic me…
Quantum theory of bilayer quantum Hall smectics
Emiliano Papa, John Schliemann, Allan H. MacDonald +1
Mean-field theory predicts that bilayer quantum Hall systems at odd integer total filling factors can have stripe ground states in which the top Landau level is occupied alternatel…
Zero-bias conductance anomaly in bilayer quantum Hall systems
Yogesh N. Joglekar, Allan H. MacDonald
Bilayer quantum Hall system at total filling factor shows a rich variety of broken symmetry ground states because of the competition between the interlayer and intralayer Cou…
Ferromagnetism in Diluted Magnetic Semiconductor Heterojunction Systems
Byounghak Lee, T. Jungwirth, A. H. MacDonald
Diluted magnetic semiconductors (DMSs), in which magnetic elements are substituted for a small fraction of host elements in a semiconductor lattice, can become ferromagnetic when d…
Coupling between Edge and Bulk in Strong-Field Quantum Dots
S. -R. Eric Yang, A. H. MacDonald
The maximum-density-droplet (MDD) state of quantum-dot electrons becomes unstable at strong magnetic fields to the addition of interior holes. Using exact diagonalization, we demon…
Bilayer Quantum Hall System in Tilted Magnetic Field
A. A. Burkov, A. H. MacDonald
We report on a theoretical study of bilayer quantum Hall systems with a magnetic field that has a component parallel to the layers. As in the case, interlayer phase coh…