Dieter Weiss

TL;DR: It is demonstrated that the sense of gyration of the vortex structure can be reversed by applying short bursts of the sinusoidal excitation field with amplitude of about 1.5 mT, unambiguously indicates a switching of the out-of-plane core polarization.

TL;DR: In contrast to previous experiments, where spin-polarized currents were driven by electric fields in semiconductor, the complementary situation where electron spins drive a current without the need of an external electric field is demonstrated.

TL;DR: An artificial array of scatterers is introduced into a macroscopic two-dimensional conductor nearly devoid of intrinsic defects, which generates pronounced structure in the magnetoresistance, anomalous low-field Hall plateaus, and a quenching of the Hall effect.

TL;DR: In this paper, a new type of magnetoresistance oscillation periodic in 1/B is observed when the carrier density Ns of a two-dimensional electron gas is weakly modulated with a period smaller than the mean free path of the electrons.

TL;DR: A novel type of magnetoresistance oscillations is observed in high-mobility AlGaAs/GaAs heterojunctions with a holographically induced lateral periodic modulation in one direction, which results from an oscillatory dependence of the bandwidth of the modulation-broadened Landau levels of the two-dimensional electron system on the band index.