2008/03/20 by Thibaut Jonckheere, Ken‐Ichiro Imura, Ken-Ichiro Imura +1
Chemistry · Computer Science · Engineering · Physics and Astronomy · #Chemistry #Condensed matter physics #Coulomb #Electron #Ferromagnetism #Isotropy #Magnetic field #Magnetization #Molecular Junctions and Nanostructures #Physics #Polarization (electrochemistry) #Quantum and electron transport phenomena #Quantum mechanics #Quantum-Dot Cellular Automata #Single-molecule magnet #Spin (aerodynamics) #Spin engineering #Spin polarization #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.78.045316
published as Phys. Rev. B 78, 045316 (2008)
arxiv created 2008/03/20 · openalex publication_date 2008/07/18 · arxiv updated 2010/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study electronic transport through a magnetic molecule with an intrinsic spin S coupled to two magnetic electrodes in the incoherent regime. The molecule is modeled as a single resonant level with large Coulomb repulsion (no double occupancy). The molecular spin is isotropic and it interacts with the electronic spin through an exchange interaction. Using an alternative method to the usual master-equation approach, we are able to obtain analytical formulas for various physical quantities of interest, such as the mean current and the current fluctuations, and also the mean value of Jz---the z component of the total spin on the molecule---and its fluctuations. This allows us to understand how the electronic current between the magnetized electrodes can control the polarization of the molecular spin. We observe in particular that the fluctuations of Jz reach unexpectedly high values.