2007/09/27 by W. Weber, Simon Seidl, S. Seidl +13 · 10 citations
Engineering · Materials Science · Physics and Astronomy · #Absorption (acoustics) #Acoustic Wave Resonator Technologies #Atomic physics #Condensed matter physics #Electric field #Excited state #GaN-based semiconductor devices and materials #Heterojunction #Magneto #Materials science #Optics #Optoelectronics #Photocurrent #Physics #Radiation #Spin (aerodynamics) #Terahertz radiation #Voltage #ZnO doping and properties #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.ssc.2007.09.035
published in Solid State Communications 145(1-2), 56-60 (Elsevier BV) · Accepted for publication in Solid State Communications
arxiv created 2007/09/27 · openalex publication_date 2007/10/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.