About: Light-induced magnetization precession in GaMnAs

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report the dynamics of the transient polar Kerr rotation (KR) and of the transient reflectivity induced by femtosecond laser pulses in ferromagnetic (Ga,Mn)As with no external magnetic field applied. It is shown that the measured KR signal consists of several different contributions, aming which only the oscillatory signal is directly connected with the ferromagnetic order in (Ga,Mn)As. The origin of the light-induced magnetization precession is discussed and the magnetization precession damping (Gilbert damping) is found to be strongly influenced by annealing of the sample. We report the dynamics of the transient polar Kerr rotation (KR) and of the transient reflectivity induced by femtosecond laser pulses in ferromagnetic (Ga,Mn)As with no external magnetic field applied. It is shown that the measured KR signal consists of several different contributions, aming which only the oscillatory signal is directly connected with the ferromagnetic order in (Ga,Mn)As. The origin of the light-induced magnetization precession is discussed and the magnetization precession damping (Gilbert damping) is found to be strongly influenced by annealing of the sample. (en) Článek se zabývá dynamikou reflektivity a Kerrovy rotace vzorku feromagnetického (Ga,Mn)As po excitaci femtosekundovým laserovým pulsem bez přiloženého vnějšího magnetického pole. Ukazuje se, že pouze oscilující složka Kerrova signálu je přímo spojena s feromagnetismem vzorku. V článku je diskutován mechanismus světlem indukované magnetizační precese; její tlumení je silně závislé na porůstovém žíhání vzorku. (cs)
Title	Light-induced magnetization precession in GaMnAs Light-induced magnetization precession in GaMnAs (en) Světlem indukované magnetizační precese v GaMnAs (cs)
skos:prefLabel	Light-induced magnetization precession in GaMnAs Light-induced magnetization precession in GaMnAs (en) Světlem indukované magnetizační precese v GaMnAs (cs)
skos:notation	RIV/68378271:_____/08:00314832!RIV09-AV0-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GEFON/06/E001), P(GEFON/06/E002), P(KAN400100652), P(LC510), Z(AV0Z10100521), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Jungwirth, Tomáš Novák, Vít Cukr, Miroslav Olejník, Kamil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	376784
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/08:00314832
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ferromagnetic semiconductors; Kerr rotation; magnetization preccesion (en)
http://linked.open.../riv/klicoveSlovo	ferromagnetic semiconductors Kerr rotation magnetization preccesion
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CD1D53AC5AB3]
http://linked.open...i/riv/nazevZdroje	Applied Physics Letters
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of nanotechnology and materials for nanoelectronics Spin-coherent transport and control in quantum nanostructures Spin-dependent transport and electronic correlations in nanostructures Structures for spintronics and quantum phenomena created by electron beam lithography
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	92
http://linked.open...iv/tvurceVysledku	Jungwirth, Tomáš Malý, P. Němec, P. Novák, Vít Cukr, Miroslav Horodyská, P. Trojánek, F. Olejník, Kamil Rozkotová, E. Sprinzl, D.
http://linked.open...ain/vavai/riv/wos	000254510300059
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films Condensed Matter Physics – New Materials and Technologies
issn	0003-6951
number of pages	3 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Light-induced magnetization precession in GaMnAs Light-induced magnetization precession in GaMnAs

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