Kondo effect in single-molecule magnet transistors

Abstract

We present a careful and thorough microscopic derivation of the Kondo Hamiltonian for single-molecule magnets (SMMs) transistors. When the molecule is strongly coupled to metallic leads, we show that by applying a transverse magnetic field it is possible to topologically induce or quench the Kondo effect in the conductance of a SMM with either an integer or a half-integer spin S>1/2. This topological Kondo effect is due to the Berry phase interference between multiple quantum tunneling paths of the spin. We calculate the renormalized Berry phase oscillations of the two Kondo peaks as a function of the transverse magnetic field by means of the poor man's scaling. In particular, we show that the Kondo exchange interaction between itinerant electrons in the leads and the SMM pseudo spin 1/2 depends crucially on the SMM spin selection rules for the addition and subtraction of an electron and can range from antiferromagnetic to ferromagnetic. We illustrate our findings with the SMM Ni4, which we propose as a possible candidate for the experimental observation of the conductance oscillations.

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Cited by in corpus (34)

• Single-molecule Nanomagnets
• Spin electric effects in molecular antiferromagnets
• First-principles study of electron transport through the single-molecule magnet Mn12
• Spin effects in transport through single-molecule magnets in the sequential and cotunneling regimes
• Magnetic anisotropy effects on quantum impurities in superconducting host
• Spin-bias driven magnetization reversal and nondestructive detection in a single molecular magnet
• Splitting of the Kondo resonance in anisotropic magnetic impurities on surfaces
• Many-particle effects in adsorbed magnetic atoms with easy-axis anisotropy: the case of Fe on CuN/Cu(100) surface
• Interplay of the Kondo Effect and Spin-Polarized Transport in Magnetic Molecules, Adatoms and Quantum Dots
• Nanoscale Spin Seebeck Rectifier: Controlling Thermal Spin Transport across Insulating Magnetic Junctions with Localized Spin
• Nonequilibrium Spin Dynamics in the Ferromagnetic Kondo Model
• Resonant and Kondo tunneling through molecular magnets
• The Influence of Magnetic Anisotropy on the Kondo Effect and Spin-Polarized Transport through Magnetic Molecules, Adatoms and Quantum Dots
• Effects of Transverse Magnetic Anisotropy on Current-Induced Spin Switching
• Theory of Tunneling Spectroscopy in a Mn${}_{12}$ Single-Electron Transistor by Density-Functional Theory Methods
• Memristive properties of single-molecule magnets
• Effect of finite Coulomb interaction on full counting statistics of electronic transport through single-molecule magnet
• Non-equilibrium magnetization dynamics of ferromagnetically coupled Kondo spins
• Temperature dependence of electronic transport through molecular magnets in the Kondo regime
• Spin current and polarization reversal through a single-molecule magnet with ferromagnetic electrodes
• Anisotropy-Exchange Resonance as a Mechanism for Entangled State Switching
• Transverse anisotropy effects on spin-resolved transport through large-spin molecules
• Field-dependent superradiant quantum phase transition of molecular magnets in microwave cavities
• Dynamical spin accumulation in large-spin magnetic molecules
• Intrinsic spin-relaxation induced negative tunnel magnetoresistance in a single-molecule magnet
• Electronic control and switching of entangled spin state using anisotropy and exchange in the three-particle paradigm
• Berry-phase in a periodically driven single molecule magnet transistor
• The single-electron transport in a three-ion magnetic molecule modulated by a transverse field
• Mapping Spin Interactions from Conductance Peak Splitting in Coulomb Blockade
• Magnetic field modulated Kondo effect in a single-magnetic-ion molecule
• Magnetic quantum coherence effect in Ni4 molecular transistors
• Berry-phase effect in single molecule magnets: analytical and numerical results
• Parity oscillations of Kondo temperature in a single molecule break junction
• Negative differential conductance and super-Poissonian shot noise in single-molecule magnet junctions