| FRIŠ, Pavel, Dominik MUNZAR, Ondřej CAHA a Adam DUBROKA. Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry. Physical Review B. College PK: AMER PHYSICAL SOC, 2018, roč. 97, č. 4, s. "045137-1"-"045137-5", 5 s. ISSN 2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.97.045137. |
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@article{1406943,
author = {Friš, Pavel and Munzar, Dominik and Caha, Ondřej and Dubroka, Adam},
article_location = {College PK},
article_number = {4},
doi = {http://dx.doi.org/10.1103/PhysRevB.97.045137},
keywords = {double exchange; ellipsometry; ferromagnetic cobaltites; La0.7Sr0.3CoO3;},
language = {eng},
issn = {2469-9950},
journal = {Physical Review B},
title = {Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry},
url = {http://dx.doi.org/10.1103/PhysRevB.97.045137},
volume = {97},
year = {2018}
}
TY - JOUR
ID - 1406943
AU - Friš, Pavel - Munzar, Dominik - Caha, Ondřej - Dubroka, Adam
PY - 2018
TI - Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry
JF - Physical Review B
VL - 97
IS - 4
SP - "045137-1"-"045137-5"
EP - "045137-1"-"045137-5"
PB - AMER PHYSICAL SOC
SN - 24699950
KW - double exchange
KW - ellipsometry
KW - ferromagnetic cobaltites
KW - La0.7Sr0.3CoO3;
UR - http://dx.doi.org/10.1103/PhysRevB.97.045137
N2 - 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.
ER -
FRIŠ, Pavel, Dominik MUNZAR, Ondřej CAHA a Adam DUBROKA. Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry. \textit{Physical Review B}. College PK: AMER PHYSICAL SOC, 2018, roč.~97, č.~4, s.~''045137-1''-''045137-5'', 5 s. ISSN~2469-9950. Dostupné z: https://dx.doi.org/10.1103/PhysRevB.97.045137.
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