Abstract：
Information technology revolution demands bigger and faster magnetic storage. All-optical spin switching (AOS) may offer a solution, where an ultrafast laser pulse alone can switch magnetization from one direction to another faithfully within 1-10 ps, free of a magnetic field. There are two types of switching: One is the helicity-dependent all-optical spin switching (HD-AOS) and the other the helicity-independent all-optical spin switching (HID-AOS). In a few alloys, one single laser pulse, with sufficient fluence, can switch spin, but the majority of magnetic materials requires multiple pulses. Both material-specific and laser-specific properties strongly affect the switching process. However, the underlying mechanism is still under debate. As the entire research field moves toward applications, it is very appropriate to review what has been achieved in the last decade. This review covers some of the major experimental and theoretical developments within the last decade, and serves as an introduction to the uninitiated reader in this field and a summary for the seasoned researchers.
摘要：
信息技术革命需要更大、更快的磁存储技术。全光学自旋切换(AOS)可能是一个解决方案，只有一个超快激光脉冲可以在1-10ps内忠实地将磁化从一个方向切换到另一个方向，没有磁性fi场。有两种类型的切换：一种是依赖于螺旋度的全光学自旋切换（HD-AOS），另一种是与螺旋度无关的全光学自旋切换（HID-AOS）。在几种合金中，一个单一的激光脉冲，有了suúcientfluence，可以切换旋转，但是大多数磁性材料需要多个脉冲。材料规格fic和激光规格fic特性都强烈影响开关过程。然而,潜在的机制仍在辩论中。随着整个研究fi领域走向应用，回顾过去十年取得的成就是非常合适的。这篇综述涵盖了过去十年中的一些主要实验和理论发展，并作为本fi领域的初学者的介绍和经验丰富的研究人员的总结。
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