Spin-bias driven magnetization reversal and nondestructive detection in a single molecular magnet

Abstract

The magnetization reversal in a single molecular magnet (SMM) weakly coupled to an electrode with spin-dependent splitting of chemical potentials (spin bias) is theoretically investigated by means of the rate equation. A microscopic mechanism for the reversal is demonstrated by the avalanche dynamics at the reversal point. The magnetization as a function of the spin bias shows hysteresis loops tunable by the gate voltage and varying with temperature. The nondestructive measurement to the orientation of giant spin in SMM is presented by measuring the fully polarized electric current in the response to a small spin bias. For Mn${}_{12}$ac molecule, its small transverse anisotropy only slightly violates the results above. The situation when there is an angle between the easy axis of the SMM and the spin quantization direction of the electrode is also studied.

17 pages, 12 figures

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Cited by in corpus (19)

• Single-molecule Nanomagnets
• Nonlocal noise cross-correlation mediated by entangled Majorana fermions
• Interplay of the Kondo Effect and Spin-Polarized Transport in Magnetic Molecules, Adatoms and Quantum Dots
• Spin Diode Behavior in Transport Through Single-Molecule Magnets
• Nanoscale Spin Seebeck Rectifier: Controlling Thermal Spin Transport across Insulating Magnetic Junctions with Localized Spin
• Current noise cross correlation mediated by Majorana bound states
• 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
• Memristive properties of single-molecule magnets
• Tight Binding Model of Mn12 Single Molecule Magnets: Electronic and Magnetic Structure and Transport Properties
• Enhanced current noise correlations in a Coulomb-Majorana device
• Ligand-based transport resonances of single-molecule magnet spin filters: Suppression of the Coulomb blockade and determination of the orientation of the magnetic easy axis
• Effect of finite Coulomb interaction on full counting statistics of electronic transport through single-molecule magnet
• Effects of magnetic field and transverse anisotropy on full counting statistics in single-molecule magnet
• Spin current and polarization reversal through a single-molecule magnet with ferromagnetic electrodes
• Detecting and Switching Magnetization of Stoner Nanograin in Non-local Spin Valve
• Intrinsic spin-relaxation induced negative tunnel magnetoresistance in a single-molecule magnet
• Tunneling anisotropic magnetoresistance in single-molecule magnet junctions
• Manipulating spins of magnetic molecules: Hysteretic behavior with respect to bias voltage