2002/09/30 by Florian Meier, Daniel Loss · 3 citations
Physics and Astronomy · #Condensed matter physics #Conductance #Ferromagnetism #Magnetic field #Magnetic properties of thin films #Magnetization #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.90.167204
published as Phys. Rev. Lett. 90, 167204 (2003) · 4 pages, 3 figures, minor changes
openalex publication_date 2003/04/22 · arxiv created 2003/04/24 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze transport of magnetization in insulating systems described by a spin Hamiltonian. The magnetization current through a quasi-one-dimensional magnetic wire of finite length suspended between two bulk magnets is determined by the spin conductance which remains finite in the ballistic limit due to contact resistance. For ferromagnetic systems, magnetization transport can be viewed as transmission of magnons, and the spin conductance depends on the temperature T. For antiferromagnetic isotropic spin-1/2 chains, the spin conductance is quantized in units of order (gmu(B))(2)/h at T=0. Magnetization currents produce an electric field and, hence, can be measured directly. For magnetization transport in electric fields, phenomena analogous to the Hall effect emerge.