Thermal and current-induced magnetization reversal in antiferromagnetic nanostructures

反铁磁纳米结构中的热和电流感应磁化反转

• 批准号: 239973735
• 负责人: Professor Dr. Matthias Bode
• 金额: --
• 依托单位: Lehrstuhl für Experimentelle Physik II
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239973735?language=en
• 关键词: Thermal; current; induced; magnetization; reversal

In this project we will investigate the underlying physical processes of thermal and current-induced magnetization reversal in antiferromagnetic nanoparticles. Towards this goal we will start with studies of thermally induced switching events and their dependence on parameters such as particles size and sample temperature. After determining the blocking temperature, we will experimentally observe to what extend the switching rate of nanoparticles is modified by very high tunneling currents up to several micro-Ampere. Particular attention will be paid to the potential influence of structural properties and defects, such as the shape of islands, kinks, and adsorbates. Finally, in the third year we will investigate if the current-induced spin-torque can be intentionally modified and maximized by atomic manipulation of magnetic and non-magnetic adatoms, which can be used to create quantum resonators in nano-sized objects.

在这个项目中，我们将研究反铁磁性纳米颗粒中热和电流诱导磁化反转的潜在物理过程。为了实现这一目标，我们将从热诱导开关事件及其对诸如颗粒大小和样品温度等参数的依赖的研究开始。在确定阻断温度后，我们将通过实验观察在几微安培的非常高的隧道电流下，纳米颗粒的开关率被改变到什么程度。将特别注意结构特性和缺陷的潜在影响，如岛状、扭结和吸附物的形状。最后，在第三年，我们将研究是否可以通过磁性和非磁性原子的原子操纵来有意地修改和最大化电流诱导的自旋转矩，这可以用于在纳米尺寸的物体中创建量子谐振器。

项目成果

Growth and magnetic domain structure of ultrathin Fe films on Rh(001)

• DOI: 10.1103/physrevb.91.184412
• 发表时间: 2015-05-20
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Kemmer, Jeannette;Wilfert, Stefan;Bode, Matthias
• 通讯作者: Bode, Matthias

Structural analysis of ultra-thin Pd films on W(110)

W(110)上超薄Pd薄膜的结构分析

• DOI: 10.1016/j.susc.2016.11.006
• 发表时间: 2017
• 期刊: Surface Science
• 影响因子: 1.9
• 作者: J. Kemmer;M.Bode
• 通讯作者: M.Bode

Quasiparticle interference scattering of spin-polarized Shockley-like surface state electrons: Ni(111)

• DOI: 10.1103/physrevb.89.155413
• 发表时间: 2014-04-08
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Kroenlein, Andreas;Kemmer, Jeannette;Bode, Matthias
• 通讯作者: Bode, Matthias