2010/11/10 by Mark S. Rudner, Emmanuel I. Rashba, É. I. Rashba · 2 citations
Chemistry · Engineering · Physics and Astronomy · #Asymmetry #Chemistry #Condensed matter physics #Electron #Magnetic field #Mesoscopic physics #Physics #Point reflection #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #Spin (aerodynamics) #Spin Hall effect #Spin polarization #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.83.073406
arxiv created 2010/11/10 · openalex publication_date 2011/02/23 · arxiv updated 2013/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In mesoscopic systems with spin-orbit coupling, spin-injection into quantum dots at zero magnetic field is expected under a wide range of conditions. However, up to now, a viable approach for experimentally identifying such an injection has been lacking. We show that electron-spin injection into a spin-blockaded double quantum dot is dramatically manifested in the breaking of magnetic-field-inversion symmetry of nuclear polarization instabilities. Over a wide parameter range, the asymmetry between positive and negative instability fields can be extremely sensitive to the injected electron-spin polarization and allows for the detection of even very weak spin injection. This phenomenon may be used to investigate the mechanisms of spin transport and may hold implications for spin-based information processing.