通过分子诱导的表面重建来操纵有机/铁磁接口的磁性
Rui Pang1,2, Xingqiang Shi1, Michel A Van Hove3
1Department of Physics, South University of Science and Technology of China , Shenzhen 518055, China.
Journal of the American Chemical Society
|March 12, 2016
概括
在{111}表面的富勒C60吸附会诱导磁性重建,增强分子自旋电子的自旋特性. 这种重建的接口对先进的电子设备来说是有前途的.
科学领域:
- 材料科学
- 表面科学
- 凝聚物质物理学
背景情况:
- 对于有机自旋电子学来说,
- 了解烯与表面的相互作用是设备应用的关键.
研究的目的:
- 在Ni ((111) 表面研究富勒C60吸附.
- 探索磁性重建及其对线圈界面属性的影响.
- 评估分子自旋电子的潜力.
主要方法:
- 理论上的第一原则研究.
- 分析磁力重建和电子性能.
- 模拟自旋分裂 π-d 合.
主要成果:
- 富勒C60吸附诱导了Ni的磁性重建.
- 在C60中增强了旋转极化和导电性.
- 在C60中出现局部自旋极化状态,具有自旋过器功能.
- 降低了Ni的磁晶异性和交换合.
结论:
- 重建的C60/Ni(111) 螺旋接口表现出分子螺旋电子学中的独特特性.
- 重建增强的旋转分裂 π-d 合是至关重要的.
- 通过回火温度控制实现实验是可行的.
相关概念视频
01:31Ferromagnetism
3.5K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
3.5K
01:24Potential Due to a Magnetized Object
857
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...
857