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伊辛铁磁薄膜中的自旋翻转统计与自旋波干涉图案：蒙特卡罗研究

Spin flip statistics and spin wave interference patterns in Ising ferromagnetic films: A Monte Carlo study.

作者信息

Acharyya Muktish

机构信息

Department of Physics, Presidency University, 86/1 College Street, Calcutta, 700073, India.

出版信息

Heliyon. 2017 Jul 17;3(7):e00357. doi: 10.1016/j.heliyon.2017.e00357. eCollection 2017 Jul.

DOI:10.1016/j.heliyon.2017.e00357
PMID:28795159
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5541143/
Abstract

The spin wave interference is studied in two dimensional Ising ferromagnet driven by two coherent spherical magnetic field waves by Monte Carlo simulation. The spin waves are found to propagate and interfere according to the classic rule of interference pattern generated by two point sources. The interference pattern of spin wave is observed in one boundary of the lattice. The interference pattern is detected and studied by spin flip statistics at high and low temperatures. The destructive interference is manifested as the large number of spin flips and vice versa.

摘要

通过蒙特卡罗模拟研究了由两个相干球面磁场波驱动的二维伊辛铁磁体中的自旋波干涉。发现自旋波按照由两个点源产生的干涉图样的经典规则传播和干涉。在晶格的一个边界观察到了自旋波的干涉图样。通过高温和低温下的自旋翻转统计来检测和研究干涉图样。相消干涉表现为大量的自旋翻转，反之亦然。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aab3/5541143/ff5a75bf679f/gr002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aab3/5541143/00fe79e470df/gr001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aab3/5541143/ff5a75bf679f/gr002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aab3/5541143/00fe79e470df/gr001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/aab3/5541143/ff5a75bf679f/gr002.jpg

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本文引用的文献

1
Direct excitation of propagating spin waves by focused ultrashort optical pulses.聚焦超短光脉冲对传播自旋波的直接激发。
Phys Rev Lett. 2013 Mar 1;110(9):097201. doi: 10.1103/PhysRevLett.110.097201. Epub 2013 Feb 25.
2
Spin wave dynamics and the determination of intrinsic damping in locally excited Permalloy thin films.自旋波动力学与局部激发坡莫合金薄膜本征阻尼的测定
Phys Rev Lett. 2007 Feb 23;98(8):087201. doi: 10.1103/PhysRevLett.98.087201. Epub 2007 Feb 20.
3
Spin-wave interference in microscopic rings.微观环中的自旋波干涉
Phys Rev Lett. 2006 Apr 28;96(16):167207. doi: 10.1103/PhysRevLett.96.167207. Epub 2006 Apr 27.