Ultrafast electron and magnetization dynamics of thin Ni and Co films on Cu(001) observed by time-resolved SHG

被引：30

作者：

Conrad, U ^{[1
]}

Güdde, J ^{[1
]}

Jähnke, V ^{[1
]}

Matthias, E ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1999年 / 68卷 / 03期

关键词：

D O I：

10.1007/s003400050658

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Utilizing pump-probe second-harmonic generation (SHG) with 150-fs, 800-nm laser pulses, we investigated electron and magnetization dynamics of thin Ni and Co films on Cu(001) following optical excitation. A much longer electronic relaxation time was found for Ni films than for Ni bulk. Various degrees of magnetic breakdown were induced in Ni and Co films of different thickness, applying the variation of Curie temperature with film thickness. For Ni films systematic changes of pump fluence and substrate temperature are fully consistent with the magnetization curve valid for thermal equilibrium.

引用

页码：511 / 517

页数：7

共 23 条

[1]

Aktsipetrov O. A., 1990, Soviet Journal of Quantum Electronics, V20, P259, DOI 10.1070/QE1990v020n03ABEH005622

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

Beaurepaire, E ;

Merle, JC ;

Daunois, A ;

Bigot, JY .

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

[3]

Bennemann K.H., 1998, INT SERIES MONOGRAPH

[4]

CAHN RW, 1991, ELECT MAGNETIC PRO A, V3

[5]

CONRAD U, 1995, THESIS FREIE U BERLI

[6] Ferromagnetic resonance of ultrathin metallic layers [J].

Farle, M .

REPORTS ON PROGRESS IN PHYSICS, 1998, 61 (07) :755-826

[7] Ultrafast magnetization dynamics of Nickel [J].

Hohlfeld, J ;

Güdde, J ;

Conrad, U ;

Dühr, O ;

Korn, G ;

Matthias, E .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 68 (03) :505-510

[8] Nonequilibrium magnetization dynamics of nickel [J].

Hohlfeld, J ;

Matthias, E ;

Knorren, R ;

Bennemann, KH .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4861-4864

[9]

Hohlfeld J, 1996, APPL PHYS B-LASERS O, V63, P541

[10] MAGNETISM IN THE FEW-MONOLAYERS LIMIT - A SURFACE MAGNETOOPTIC KERR-EFFECT STUDY OF THE MAGNETIC-BEHAVIOR OF ULTRATHIN FILMS OF CO, NI, AND CO-NI ALLOYS ON CU(100) AND CU(111) [J].

HUANG, F ;

KIEF, MT ;

MANKEY, GJ ;

WILLIS, RF .

PHYSICAL REVIEW B, 1994, 49 (06) :3962-3971

← 1 2 3 →