2007/05/31 by David Roosen, M. R. Wegewijs, Maarten R. Wegewijs +1
Chemistry · Materials Science · Physics and Astronomy · #Advanced NMR Techniques and Applications #Anisotropy #Condensed matter physics #Dynamics (music) #Electrical resistivity and conductivity #Kondo effect #Kondo model #Magnetism in coordination complexes #Non-equilibrium thermodynamics #Physics #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum mechanics #Renormalization group #Spins #Statistical physics #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.100.087201
published as Phys.Rev.Lett.100:087201,2008 · 4 pages, 5 figures, published version
openalex publication_date 2008/02/27 · arxiv created 2008/03/11 · arxiv updated 2011/01/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the time-dependent Kondo effect in a single-molecule magnet (SMM) strongly coupled to metallic electrodes. Describing the SMM by a Kondo model with large spin S>1/2, we analyze the underscreening of the local moment and the effect of anisotropy terms on the relaxation dynamics of the magnetization. Underscreening by single-channel Kondo processes leads to a logarithmically slow relaxation, while finite uniaxial anisotropy causes a saturation of the SMM's magnetization. Additional transverse anisotropy terms induce quantum spin tunneling and a pseudospin-1/2 Kondo effect sensitive to the spin parity.