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 1310.6902cond-mat.mes-hallcond-mat.mtrl-sci
收藏

人工自旋冰偶极阵列中的热弦激发

Thermal String Excitations in Artificial Spin-Ice Dipolar Arrays

Danny Thonig, Stephan Reißaus, Ingrid Mertig, Jürgen Henk

摘要:

我们报告了人工自旋冰偶极阵列的理论研究,使用最近实验中采用的纳米岛几何结构[A。Farhan \textit{et al.},《自然物理学》\textbf{9}(2013)375]。在正方形晶格中的热磁弦激发的数量急剧增加的行和列的垂直位移。我们发现大的增量,特别是在低温和字符串激发准单极的收费$\pm 4$。通过动力学蒙特卡罗模拟,我们解决了这种激发的热稳定性,从而提供了时间尺度的实验观察。

英文摘要:

We report on a theoretical investigation of artificial spin-ice dipolar arrays, using a nanoisland geometry adopted from recent experiments [A. Farhan \textit{et al.}, Nature Phys.\ \textbf{9} (2013) 375]. The number of thermal magnetic string excitations in the square lattice is drastically increased by a vertical displacement of rows and columns. We find large increments especially for low temperatures and for string excitations with quasi-monopoles of charges $\pm 4$. By kinetic Monte Carlo simulations we address the thermal stability of such excitations, thereby providing time scales for their experimental observation.

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。

↑