2004/09/21 by Wolfgang Häusler
Computer Science · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Condensed matter physics #Dephasing #Ferromagnetism #Luttinger liquid #Physics #Precession #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum-Dot Cellular Automata #Rashba effect #Spin (aerodynamics) #Spins #Spintronics #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.70.115313
published as Phys. Rev. B 70 (2004) 115313 · 6 pages, figures included
openalex publication_date 2004/09/21 · arxiv created 2004/09/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
Coherent Rashba spin precession along interacting multimode quantum channels is investigated, revisiting the theory of coupled Tomonaga-Luttinger liquids. We identify susceptibilities as the key parameters to govern exponents and Rashba precession lengths. In semiconducting quantum wires spins of different transport channels are found to dephase in their respective precession angles with respect to one another, as a result of the interaction. This could explain the experimental difficulty to realize the Datta Das transistor. In single walled carbon nanotubes, on the other hand, interactions are predicted to suppress dephasing between the two flavor modes at small doping.