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95 papers · 1 filter
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…
On the quadratic finite element approximation of 1-d waves: propagation, observation and control
Aurora Marica, Enrique Zuazua
We study the propagation, observation and control properties of the 1-d wave equation on a bounded interval discretized in space using the quadratic classical finite element approx…
Self-intersecting Regge trajectories in multi-channel scattering
D. Sokolovski, Z. Felfli, A. Z. Msezane
We present a simple direct method for calculating Regge trajectories for a multichannel scattering problem. The approach is applied to the case of two coupled Thomas-Fermi type pot…
Correlation effects in bistability at the nanoscale: steady state and beyond
E. Khosravi, A. -M. Uimonen, A. Stan +4
The possibility of finding multistability in the density and current of an interacting nanoscale junction coupled to semi-infinite leads is studied at various levels of approximati…
More on integrable structures of superstrings in AdS(4) x CP(3) and AdS(2) x S(2) x T(6) superbackgrounds
Alessandra Cagnazzo, Dmitri Sorokin, Linus Wulff
In this paper we continue the study, initiated in arXiv:1009.3498 and arXiv:1104.1793, of the classical integrability of Green-Schwarz superstrings in AdS(4) x CP(3) and AdS(2) x S…
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…