2002/12/12 by Martin Y. Veillette, Cristina Bena, Leon Balents
Physics and Astronomy · #Condensed matter physics #Larmor precession #Magnetic field #Magnetic properties of thin films #Mesoscopic physics #Physics #Physics of Superconductivity and Magnetism #Precession #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.69.075319
published as Phys. Rev. B 69, 075319 (2004) · 9 pages, 5 figures
arxiv created 2002/12/12 · openalex publication_date 2004/02/27 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compare and contrast magnetotransport oscillations in the fully quantum (single-electron coherent) and classical limits for a simple but illustrative model. In particular, we study the induced magnetization and spin current in a two-terminal double-barrier structure with an applied Zeeman field between the barriers and spin disequilibrium in the contacts. Classically, the spin current shows strong tunneling resonances due to spin precession in the region between the two barriers. However, these oscillations are distinguishable from those in the fully coherent case, for which a proper treatment of the electron phase is required. We explain the differences in terms of the presence or absence of coherent multiple wave reflections.