FRIŠ, Pavel, Dominik MUNZAR, Ondřej CAHA and Adam DUBROKA. Direct observation of double exchange in ferromagnetic La0.7Sr0.3CoO3 by broadband ellipsometry. Physical Review B. College PK: AMER PHYSICAL SOC, 2018, vol. 97, No 4, p. "045137-1"-"045137-5", 5 pp. ISSN 2469-9950. Available from: 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 and 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, vol.~97, No~4, p.~''045137-1''-''045137-5'', 5 pp. ISSN~2469-9950. Available from: https://dx.doi.org/10.1103/PhysRevB.97.045137.
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