Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00102276" target="_blank" >RIV/00216224:14310/18:00102276 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.97.045137" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.97.045137</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.97.045137" target="_blank" >10.1103/PhysRevB.97.045137</a>
Alternative languages
Result language
angličtina
Original language name
Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry
Original language description
We present results of our broadband ellipsometry measurements of the optical response of ferromagnetic La0.7Sr0.3CoO3. Our data show that the ferromagnetic transition is accompanied by a transfer of optical spectral weight from an absorption band centered at 1.5 eV to a narrow component of the Drude-like peak. The associated reduction of the intraband kinetic energy is significantly larger than k(B)T(c), confirming that the double exchange plays a major role in the ferromagnetism of doped cobaltites. In conjunction with results of recent theoretical studies, the temperature dependence of the Drude-like peak suggests that the double exchange is mediated by t(2g) orbitals.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
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)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
97
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
„045137-1“-„045137-5“
UT code for WoS article
000423339000005
EID of the result in the Scopus database
2-s2.0-85040911827