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Electronically Mediated Magnetic Anisotropy in Vibrating Magnetic Molecules
ACS Omega ( IF 3.7 ) Pub Date : 2018-06-19 00:00:00 , DOI: 10.1021/acsomega.8b00449 Juan David Vasquez Jaramillo 1 , Henning Hammar 1 , Jonas Fransson 1
ACS Omega ( IF 3.7 ) Pub Date : 2018-06-19 00:00:00 , DOI: 10.1021/acsomega.8b00449 Juan David Vasquez Jaramillo 1 , Henning Hammar 1 , Jonas Fransson 1
Affiliation
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We address the electronically induced anisotropy field acting on a spin moment 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 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.
中文翻译：
振动分子中电子介导的磁各向异性
我们解决了作用在铁磁性金属之间的交界处的振动磁性分子中的自旋矩上的电子感应各向异性场。在电子和分子振动之间的弱耦合下，可以通过在结上施加温差或电压偏置，将各向异性的性质从有利于高自旋（易轴）磁矩改变为低自旋（易面） 。对于铁磁性金属中不相等的自旋极化，表明各向异性的特性基本上由较弱的铁磁体的特性决定。通过提高这种金属的温度或引入电压偏置，可以抑制其影响，从而将对各向异性的主要贡献交换为更强的铁磁体。
更新日期：2018-06-19
中文翻译：
振动分子中电子介导的磁各向异性
我们解决了作用在铁磁性金属之间的交界处的振动磁性分子中的自旋矩上的电子感应各向异性场。在电子和分子振动之间的弱耦合下，可以通过在结上施加温差或电压偏置，将各向异性的性质从有利于高自旋（易轴）磁矩改变为低自旋（易面） 。对于铁磁性金属中不相等的自旋极化，表明各向异性的特性基本上由较弱的铁磁体的特性决定。通过提高这种金属的温度或引入电压偏置，可以抑制其影响，从而将对各向异性的主要贡献交换为更强的铁磁体。
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