Spin-orbit enhanced demagnetization rate in Co/Pt-multilayers

被引：79

作者：

Kuiper, K. C. ^{[1
]}

Roth, T. ^{[2
,3
]}

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

Schmitt, O. ^{[2
,3
]}

Koopmans, B. ^{[1
]}

Cinchetti, M. ^{[2
,3
]}

Aeschlimann, M. ^{[2
,3
]}

机构：

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

[2] Univ Kaiserslautern, Dept Phys, D-67663 Kaiserslautern, Germany

[3] Univ Kaiserslautern, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 20期

关键词：

ULTRAFAST; TEMPERATURE; DYNAMICS; NICKEL; HEAT;

D O I：

10.1063/1.4902069

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to explore the role of enhanced spin-orbit interactions on the laser-induced ultrafast magnetization dynamics, we performed a comparative study on cobalt thin films and Co/Pt multilayers. We show that the presence of the Co/Pt interfaces gives rise to a three-fold faster demagnetization upon femtosecond laser heating. Experimental data for a wide range of laser fluences are analyzed using the Microscopic 3-Temperature Model. We find that the Elliott-Yafet spin-flip scattering in the multilayer structure is increased by at least a factor of four with respect to the elementary Co film. (C) 2014 AIP Publishing LLC.

引用

页数：4

共 20 条

[1] Ultrafast magnetization dynamics rates within the Landau-Lifshitz-Bloch model [J].

Atxitia, U. ;

Chubykalo-Fesenko, O. .

PHYSICAL REVIEW B, 2011, 84 (14)

[2] Applied physics - Speed limit ahead [J].

Back, CH ;

Pescia, D .

NATURE, 2004, 428 (6985) :808-809

[3] Superdiffusive Spin Transport as a Mechanism of Ultrafast Demagnetization [J].

Battiato, M. ;

Carva, K. ;

Oppeneer, P. M. .

PHYSICAL REVIEW LETTERS, 2010, 105 (02)

[4] Ultrafast spin dynamics in ferromagnetic nickel [J].

Beaurepaire, E ;

Merle, JC ;

Daunois, A ;

Bigot, JY .

PHYSICAL REVIEW LETTERS, 1996, 76 (22) :4250-4253

[5] Distinguishing the ultrafast dynamics of spin and orbital moments in solids [J].

Boeglin, C. ;

Beaurepaire, E. ;

Halte, V. ;

Lopez-Flores, V. ;

Stamm, C. ;

Pontius, N. ;

Duerr, H. A. ;

Bigot, J. -Y. .

NATURE, 2010, 465 (7297) :458-U78

[6] Influence of photon angular momentum on ultrafast demagnetization in nickel [J].

Dalla Longa, F. ;

Kohlhepp, J. T. ;

de Jonge, W. J. M. ;

Koopmans, B. .

PHYSICAL REVIEW B, 2007, 75 (22)

[7] Role of electron-magnon scatterings in ultrafast demagnetization [J].

Haag, Michael ;

Illg, Christian ;

Faehnle, Manfred .

PHYSICAL REVIEW B, 2014, 90 (01)

[8] Slow recovery of the magnetisation after a sub-picosecond heat pulse [J].

Kazantseva, N. ;

Nowak, U. ;

Chantrell, R. W. ;

Hohlfeld, J. ;

Rebei, A. .

EPL, 2008, 81 (02)

[9]

Koopmans B, 2010, NAT MATER, V9, P259, DOI [10.1038/NMAT2593, 10.1038/nmat2593]

[10] Ultrafast demagnetization of ferromagnetic transition metals: The role of the Coulomb interaction [J].

Krauss, Michael ;

Roth, Tobias ;

Alebrand, Sabine ;

Steil, Daniel ;

Cinchetti, Mirko ;

Aeschlimann, Martin ;

Schneider, Hans Christian .

PHYSICAL REVIEW B, 2009, 80 (18)

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