arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.12774cond-mat.mtrl-scicond-mat.other
收藏

反铁磁Cr2O3中磁振子自旋电流的电压控制

Voltage control of magnon spin currents in antiferromagnetic Cr2O3

Changjiang Liu, Yongming Luo, Deshun Hong, Steven S. -L. Zhang, Brandon Fisher, John E. Pearson, J. Samuel Jiang, Axel Hoffmann, Anand Bhattacharya

摘要:

利用自旋自由度的电压控制自旋电子器件对于未来的应用是期望的,并且可以允许能量高效的信息处理。纯自旋电流可以通过自旋塞贝克效应(SSE)由磁性系统中的热激发产生。然而,控制这种自旋电流,仅通过电气手段,一直是一个根本的挑战。在这里,我们调查的反铁磁绝缘体Cr2O3的SSE的电压控制。我们表明,在这种材料中产生的SSE响应可以有效地控制通过施加偏置电压,由于SSE的磁子晶格的取向的敏感性,以及磁电耦合Cr2O3的存在。我们的实验结果解释使用模型的基础上磁电效应Cr2O3。

英文摘要:

Voltage-controlled spintronic devices utilizing the spin degree of freedom are desirable for future applications, and may allow energy-efficient information processing. Pure spin current can be created by thermal excitations in magnetic systems via the spin Seebeck effect (SSE). However, controlling such spin currents, only by electrical means, has been a fundamental challenge. Here, we investigate voltage control of the SSE in the antiferromagnetic insulator Cr2O3. We demonstrate that the SSE response generated in this material can be effectively controlled by applying a bias voltage, owing to the sensitivity of the SSE to the orientation of the magnetic sublattices as well as the existence of magnetoelectric couplings in Cr2O3. Our experimental results are explained using a model based on the magnetoelectric effect in Cr2O3.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑