Magneto-gyrotropic photogalvanic effects in GaN/AlGaN two-dimensional systems
arXiv:0709.4330 · doi:10.1016/j.ssc.2007.09.035
Abstract
The magneto-gyrotropic photogalvanic and spin-galvanic effects are observed in (0001)-oriented GaN/AlGaN heterojunctions excited by terahertz radiation. We show that free-carrier absorption of linearly or circularly polarized terahertz radiation in low-dimensional structures causes an electric photocurrent in the presence of an in-plane magnetic field. Microscopic mechanisms of these photocurrents based on spin-related phenomena are discussed. Properties of the magneto-gyrotropic and spin-galvanic effects specific for hexagonal heterostructures are analyzed.
arXiv commentAccepted for publication in Solid State Communications
References in corpus (7)
- Zero-bias spin separation
- Magneto-Gyrotropic Photogalvanic Effects in Semiconductor Quantum Wells
- Large Bychkov-Rashba spin-orbit coupling in high-mobility GaN/AlGaN heterostructures
- Demonstration of Rashba spin splitting in GaN-based heterostructures
- Weak antilocalization and zero-field electron spin splitting in AlGaN/AlN/GaN heterostructures with a polarization induced two-dimensional electron gas
- Pure spin currents induced by spin-dependent scattering processes in SiGe quantum well structures
- Magneto-gyrotropic photogalvanic effects due to inter-subband absorption in quantum wells
Cited by in corpus (4)
- Femtosecond control of electric currents at the interfaces of metallic ferromagnetic heterostructures
- Magneto-gyrotropic effects in semiconductor quantum wells (review)
- Quantum ratchet effects induced by terahertz radiation in GaN-based two-dimensional structures
- Electrical Magnetochiral current in Tellurium