2005/02/28 by E. Ya. Sherman, Ali Najmaie, J. E. Sipe · 5 citations
Computer Science · Engineering · Physics and Astronomy · #Absorption (acoustics) #Advancements in Semiconductor Devices and Circuit Design #Biasing #Condensed matter physics #Current (fluid) #Electron #Laser #Observable #Optics #Physics #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Quantum well #Spectroscopy #Spin (aerodynamics) #Spin Hall effect #Spin polarization #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.1882747
published as Appl. Phys. Lett. 86, 122103 (2005) · minor changes, short version published
openalex publication_date 2005/03/15 · arxiv created 2005/04/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that a pure spin current can be injected in quantum wells by the absorption of linearly polarized infrared radiation, leading to transitions between subbands. The magnitude and the direction of the spin current depend on the Dresselhaus and Rashba spin–orbit coupling constants and light frequency and, therefore, can be manipulated by changing the light frequency and/or applying an external bias across the quantum well. The injected spin current should be observable either as a voltage generated via the anomalous spin-Hall effect, or by spatially resolved pump–probe optical spectroscopy.