2002/12/31 by Marco Pala, Marco G. Pala, Michele Governale +3 · 1 citation
Mathematics · Physics and Astronomy · #Condensed matter physics #Electron #Ferromagnetism #Hamiltonian (control theory) #Magnetic properties of thin films #Mathematics #Oscillation (cell signaling) #Physics #Physics of Superconductivity and Magnetism #Precession #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum well #Rashba effect #Semiconductor #Spin (aerodynamics) #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.1209/epl/i2003-10195-x
published as Europhys. Lett. 65, 850 (2004) · 7 pages, 2 eps figures included, minor changes
openalex publication_date 2004/03/01 · arxiv created 2004/03/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study spin precession due to Rashba spin splitting of electrons and holes in semiconductor quantum wells. Based on a simple analytical expression that we derive for the current modulation in a broad class of experimental situations of ferromagnet/nonmagnetic semiconductor/ferromagnet hybrid structures, we conclude that the Datta-Das spin transistor i) is feasible with holes and ii) its functionality is not affected by integration over injection angles. The current modulation shows a universal oscillation period, irrespective of the different forms of the Rashba Hamiltonian for electrons and holes. The analytic formulas approximate extremely well exact numerical calculations of a more elaborate Kohn-Luttinger model.