Microscopic model for ultrafast magnetization dynamics of multisublattice magnets

被引：70

作者：

Schellekens, A. J. ^{[1
]}

Koopmans, B. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Ctr NanoMat cNM, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

来源：

PHYSICAL REVIEW B | 2013年 / 87卷 / 02期

关键词：

NICKEL; DEMAGNETIZATION; METALS;

D O I：

10.1103/PhysRevB.87.020407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We introduce a microscopic model to describe the ultrafast response of magnetic materials with two sublattices to heating by a femtosecond laser pulse. Even though the model is based on a set of simple Hamiltonians, it readily reproduces experimental observations such as ultrafast reversal of ferrimagnets and delayed demagnetization of one sublattice in ferromagnetic alloys. The calculations give insight into the microscopic mechanisms and thermodynamics governing the complex dynamics of these multisublattice magnets. DOI: 10.1103/PhysRevB.87.020407

引用

页数：5

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