Realizing pure spin current by the photogalvanic effect in armchair graphene nanoribbons with nano-constriction engineering
Yuejun Li, Xiaofei Shang, Yan-Hong Zhou, Xiaohong Zheng
Abstract
= 0°, 90° and 180° in device D1, while it can be generated at any polarization angle in D2. The robustness in D2 is attributed to the spatial inversion symmetry in geometry and the inversion antisymmetry of spin density. These findings suggest that local magnetism engineering provides a reliable method for generating robust pure spin currents with the PGE in nonmagnetic systems, especially opening up new possibilities for the application of AGNRs in spintronics.
Topics & Concepts
Graphene nanoribbonsCondensed matter physicsSymmetry (geometry)InverseGraphenePolarization (electrochemistry)Nano-Spin polarizationSpin (aerodynamics)Current (fluid)Materials sciencePhysicsNanotechnologyChemistryQuantum mechanicsGeometryMathematicsElectronThermodynamicsPhysical chemistryGraphene research and applicationsQuantum and electron transport phenomena2D Materials and Applications