Signatures of Molecular Magnetism in Single-Molecule Transport Spectroscopy

Abstract

Single-molecule transistors provide a unique experimental tool to investigate the coupling between charge transport and the molecular degrees of freedom in individual molecules. One interesting class of molecules for such experiments are the single-molecule magnets, since the intramolecular exchange forces present in these molecules should couple strongly to the spin of transport electrons, thereby providing both new mechanisms for modulating electron flow and also new means for probing nanoscale magnetic excitations. Here we report single-molecule transistor measurements on devices incorporating Mn12 molecules. By studying the electron-tunneling spectrum as a function of magnetic field, we are able to identify clear signatures of magnetic states and their associated magnetic anisotropy. A comparison of the data to simulations also suggests that electron flow can strongly enhance magnetic relaxation of the magnetic molecule.

References in corpus (6)

• The Kondo effect in C${}_{60}$ single-molecule transistors
• Inelastic electron tunneling via molecular vibrations in single-molecule transistors
• Spin amplification, reading, and writing in transport through anisotropic magnetic molecules
• Spin quantum tunneling in single molecular magnets: fingerprints in transport spectroscopy of current and noise
• Theory for transport through a single magnetic molecule: Endohedral N@C60
• Tunable Magnetic Relaxation In Magnetic Nanoparticles

Cited by in corpus (94)

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• Spin-bias driven magnetization reversal and nondestructive detection in a single molecular magnet
• Molecular spintronics using noncollinear magnetic molecules
• Transport through quantum-dot spin valves containing magnetic impurities
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• Interplay of the Kondo Effect and Spin-Polarized Transport in Magnetic Molecules, Adatoms and Quantum Dots
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• Tunneling through magnetic molecules with arbitrary angle between easy axis and magnetic field
• Spin Diode Behavior in Transport Through Single-Molecule Magnets
• First-principles study of a single-molecule magnet Mn_{12} monolayer on the Au(111) surface
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• Rotational States of Magnetic Molecules
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• Electric control of a $\{F{e}_4\}$ single-molecule magnet in a single-electron transistor
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• Effects of Intrinsic Spin-Relaxation in Molecular Magnets on Current-Induced Magnetic Switching
• Sequential Tunneling through Molecular Spin Rings
• Collective coupling of a macroscopic number of single-molecule magnets with a microwave cavity mode
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• Magnetic Molecule on a Microcantilever: Quantum Magneto-mechanical Oscillations
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• Effect of finite Coulomb interaction on full counting statistics of electronic transport through single-molecule magnet
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• Molecular Magnetocapacitance
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• Vibrational detection and control of spin in mixed-valence molecular transistors
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