Scaling of quadratic and linear magneto-optic Kerr effect spectra with L2(1) ordering of Co2MnSi Heusler compound

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F20%3A10245213" target="_blank" >RIV/61989100:27640/20:10245213 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/20:10245213 RIV/00216208:11320/20:10414407
Result on the web
<a href="https://aip.scitation.org/doi/10.1063/5.0008427" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0008427</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0008427" target="_blank" >10.1063/5.0008427</a>

Result language
angličtina
Original language name
Scaling of quadratic and linear magneto-optic Kerr effect spectra with L2(1) ordering of Co2MnSi Heusler compound
Original language description
Spectral ellipsometry is a useful technique allowing fast, nondestructive, and contactless characterization of thin films and constituent materials. In this Letter, we show that both the linear magneto-optic Kerr effect (LinMOKE, proportional to the magnetization M) and the quadratic MOKE (QMOKE, proportional to M 2) can be a useful extension of spectral ellipsometry and are able to sense the crystallographic ordering of Heusler compounds. This is demonstrated for the Heusler compound Co2MnSi, which has a crystallographic transition from a B2 to an L2(1) structure with increasing annealing temperature T-a. We investigated a set of Co2MnSi thin films deposited on MgO(001) substrates and annealed from 300 to 500 degrees C. The amplitude of LinMOKE and QMOKE spectra, detected in the extended visible spectral range of 0.8-5.5eV, scales linearly with T-a, and this effect is pronounced at the resonant peaks of the QMOKE spectra below 2.0eV. Furthermore, the spectra of the magneto-optic (MO) parameters, which fully describe the MO response of Co2MnSi up to the second order in M, are obtained depending on T-a. Finally, the spectra are compared with ab initio calculations of a purely L2(1)-ordered Co2MnSi Heusler compound.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)