Comparison of micromagnetic parameters of the ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286160" target="_blank" >RIV/00216208:11320/14:10286160 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.90.155203" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.90.155203</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.90.155203" target="_blank" >10.1103/PhysRevB.90.155203</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of micromagnetic parameters of the ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As

Popis výsledku v původním jazyce

We report on the determination of micromagnetic parameters of epilayers of the ferromagnetic semiconductor (Ga,Mn) As, which has an easy axis in the sample plane, and (Ga,Mn)(As,P), which has an easy axis perpendicular to the sample plane. We use an optical analog of ferromagnetic resonance where the laser-pulse-induced precession of magnetization is measured directly in the time domain. By the analysis of a single set of pump-and-probe magneto-optical data, we determined the magnetic anisotropy fields,the spin stiffness, and the Gilbert damping constant in these two materials. We show that incorporation of 10% of phosphorus in (Ga,Mn) As with 6% of manganese leads not only to the expected sign change of the perpendicular-to-plane anisotropy field butalso to an increase of the Gilbert damping and to a reduction of the spin stiffness. The observed changes in the micromagnetic parameters upon incorporating P in (Ga,Mn) As are consistent with the reduced hole density, conductivity, and

Název v anglickém jazyce

Comparison of micromagnetic parameters of the ferromagnetic semiconductors (Ga,Mn)(As,P) and (Ga,Mn)As

Popis výsledku anglicky

We report on the determination of micromagnetic parameters of epilayers of the ferromagnetic semiconductor (Ga,Mn) As, which has an easy axis in the sample plane, and (Ga,Mn)(As,P), which has an easy axis perpendicular to the sample plane. We use an optical analog of ferromagnetic resonance where the laser-pulse-induced precession of magnetization is measured directly in the time domain. By the analysis of a single set of pump-and-probe magneto-optical data, we determined the magnetic anisotropy fields,the spin stiffness, and the Gilbert damping constant in these two materials. We show that incorporation of 10% of phosphorus in (Ga,Mn) As with 6% of manganese leads not only to the expected sign change of the perpendicular-to-plane anisotropy field butalso to an increase of the Gilbert damping and to a reduction of the spin stiffness. The observed changes in the micromagnetic parameters upon incorporating P in (Ga,Mn) As are consistent with the reduced hole density, conductivity, and

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B - Condensed Matter and Materials Physics

ISSN

1098-0121

e-ISSN

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Svazek periodika

90

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

"155203-1"-"155203-12"

Kód UT WoS článku

000344013900001

EID výsledku v databázi Scopus

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