TY - GEN
T1 - Landau Transitions and Berry Curvature Effects in Optically Induced Anomalous Hall Current
AU - Dresler, Christoph
AU - Priyadarshi, Shekhar
AU - Hübner, Jens
AU - Bieler, Mark
PY - 2023
Y1 - 2023
N2 - The anomalous Hall currents (AHC) and spin Hall currents are variants of the Hall effect, with a current flowing perpendicular to an external electrical bias due to the Berry curvature and scattering processes. In this work, we study AHC in bulk GaAs under the formation of Landau levels, which give rise to quantized current responses in the case of two-dimensional GaAs systems. We show that an onset of quantization can also be reached in three-dimensional GaAs systems in the ultrafast (fs to ps) regime. This quantization appears as an enhancement of the AHC for ultrafast excitation of optical transitions between valance and conduction band Landau levels. An analysis of the shape of the resulting THz pulses for different excitation conditions suggests that both, Berry curvature and scattering contribute to the AHC.
AB - The anomalous Hall currents (AHC) and spin Hall currents are variants of the Hall effect, with a current flowing perpendicular to an external electrical bias due to the Berry curvature and scattering processes. In this work, we study AHC in bulk GaAs under the formation of Landau levels, which give rise to quantized current responses in the case of two-dimensional GaAs systems. We show that an onset of quantization can also be reached in three-dimensional GaAs systems in the ultrafast (fs to ps) regime. This quantization appears as an enhancement of the AHC for ultrafast excitation of optical transitions between valance and conduction band Landau levels. An analysis of the shape of the resulting THz pulses for different excitation conditions suggests that both, Berry curvature and scattering contribute to the AHC.
UR - http://www.scopus.com/inward/record.url?scp=85175737743&partnerID=8YFLogxK
U2 - 10.1109/CLEO/EUROPE-EQEC57999.2023.10232802
DO - 10.1109/CLEO/EUROPE-EQEC57999.2023.10232802
M3 - Conference contribution
AN - SCOPUS:85175737743
SN - 979-8-3503-4600-8
T3 - Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference
BT - 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
Y2 - 26 June 2023 through 30 June 2023
ER -