2000/03/03 by Leon Balents, Reinhold Egger · 3 citations
Engineering · Materials Science · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Carbon nanotube #Condensed matter physics #Coupling (piping) #Electron #Ferromagnetism #Graphene research and applications #Materials science #Nanotechnology #Non-equilibrium thermodynamics #Physics #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.85.3464
4 pages
arxiv created 2000/03/03 · openalex publication_date 2000/10/16 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a general formulation of spin-dependent transport through a clean one-dimensional interacting quantum wire or carbon nanotube, connected to noncollinear ferromagnets via tunnel junctions. The low energy description of each junction is given by a conformally invariant boundary condition representing exchange coupling, in addition to a pair of electron tunneling operators. The effects of the exchange coupling are strongly enhanced by interactions, leading to a dramatic suppression of spin accumulation: a direct signature of spin-charge separation. Finally, backscattering induces nonequilibrium oscillations in the current-voltage relation.