Systematic Study of Mn-Doping Trends in Optical Properties of (Ga,Mn)As

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00221362" target="_blank" >RIV/68407700:21230/10:00221362 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/10:00354020 RIV/00216208:11320/10:10062065 RIV/00216208:11310/10:10062065

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevLett.105.227201" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.105.227201</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.105.227201" target="_blank" >10.1103/PhysRevLett.105.227201</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Systematic Study of Mn-Doping Trends in Optical Properties of (Ga,Mn)As

Popis výsledku v původním jazyce

We report on a systematic study of optical properties of (Ga,Mn)As epilayers spanning the wide range of accessible MnGa dopings. The material synthesis was optimized for each nominal Mn doping in order to obtain films which are as close as possible to uniform uncompensated (Ga,Mn)As mixed crystals. We observe a broad maximum in the mid-infrared absorption spectra whose position exhibits a prevailing blueshift for increasing Mn doping. In the visible range, a peak in the magnetic circular dichroism also shifts with increasing Mn doping. The results are consistent with the description of ferromagnetic (Ga,Mn)As based on the microscopic valence band theory. They also imply that opposite trends seen previously in the optical data on a limited number of samples are not generic and cannot serve as an experimental basis for postulating the impurity band model of ferromagnetic (Ga,Mn)As

Název v anglickém jazyce

Systematic Study of Mn-Doping Trends in Optical Properties of (Ga,Mn)As

Popis výsledku anglicky

We report on a systematic study of optical properties of (Ga,Mn)As epilayers spanning the wide range of accessible MnGa dopings. The material synthesis was optimized for each nominal Mn doping in order to obtain films which are as close as possible to uniform uncompensated (Ga,Mn)As mixed crystals. We observe a broad maximum in the mid-infrared absorption spectra whose position exhibits a prevailing blueshift for increasing Mn doping. In the visible range, a peak in the magnetic circular dichroism also shifts with increasing Mn doping. The results are consistent with the description of ferromagnetic (Ga,Mn)As based on the microscopic valence band theory. They also imply that opposite trends seen previously in the optical data on a limited number of samples are not generic and cannot serve as an experimental basis for postulating the impurity band model of ferromagnetic (Ga,Mn)As

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Svazek periodika

105

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

—

Kód UT WoS článku

000284532900025

EID výsledku v databázi Scopus

2-s2.0-78649372341