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11 papers · 2 filters
Second-harmonic generation induced by electric currents in GaAs
Brian A. Ruzicka, Lalani K. Werake, Guowei Xu +4
We demonstrate a new, nonlinear optical effect of electric currents. First, a steady current is generated by applying a voltage on a doped GaAs crystal. We demonstrate that this cu…
Wannier-based calculation of the orbital magnetization in crystals
M. G. Lopez, David Vanderbilt, T. Thonhauser +1
We present a first-principles scheme that allows the orbital magnetization of a magnetic crystal to be evaluated accurately and efficiently even in the presence of complex Fermi su…
Maximally localized Wannier functions: Theory and applications
Nicola Marzari, Arash A. Mostofi, Jonathan R. Yates +2
The electronic ground state of a periodic system is usually described in terms of extended Bloch orbitals, but an alternative representation in terms of localized "Wannier function…
Anisotropic spin relaxation revealed by resonant spin amplification in (110) GaAs quantum wells
M. Griesbeck, M. M. Glazov, E. Ya. Sherman +4
We have studied spin dephasing in a high-mobility two-dimensional electron system (2DES), confined in a GaAs/AlGaAs quantum well grown in the [110] direction, using the resonant sp…
Exchange Bias Induced by the Fe3O4 Verwey transition
J. de la Venta, M. Erekhinsky, Siming Wang +3
We present a study of the exchange bias in different configurations of V2O3 thin films with ferromagnetic layers. The exchange bias is accompanied by a large vertical shift in the…
A real-time approach to the optical properties of solids and nano-structures: the time-dependent Bethe-Salpeter equation
C. Attaccalite, M. Grüning, A. Marini
Many-body effects are known to play a crucial role in the electronic and optical properties of solids and nano-structures. Nevertheless the majority of theoretical and numerical ap…