Electronically Mediated Magnetic Anisotropy in Vibrating Magnetic Molecules
arXiv:1803.05480 · doi:10.1021/acsomega.8b00449
Abstract
We address the electronically induced anisotropy field acting on a spin moment comprised in a vibrating magnetic molecule located in the junction between ferromagnetic metals. Under weak coupling between the electrons and molecular vibrations, the nature of the anisotropy can be changed from favoring a high spin (easy axis) magnetic moment to a low spin (easy plane) by applying a temperature difference or a voltage bias across the junction. For unequal spin-polarizations in the ferromagnetic metals it is shown that the character of the anisotropy is essentially determined by the properties of the weaker ferromagnet. By increasing the temperature in this metal, or introducing a voltage bias, its influence can be suppressed such that the dominant contribution to the anisotropy is interchanged to the stronger ferromagnet. With increasing coupling strength between the molecular vibrations and the electrons, the nature of the anisotropy is locked into favoring easy plane magnetism.
arXiv comment8 pages, 5 figures, submitted
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Cited by in corpus (3)
- Spin-dependent heat signatures of single-molecule spin dynamics
- Spin transport through a nanojunction with a precessing anisotropic molecular spin: Quantum interference and spin-transfer torque
- Effect of uniaxial magnetic anisotropy on charge transport in a junction with a precessing anisotropic molecular spin