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Aplesnin, S. S. Effect of bond fluctuations on the transport properties of manganites and nickelates / S. S. Aplesnin> // J. Exp. Theor. Phys. - 2007. - Vol. 104, Is. 5. - P. 766-774, DOI 10.1134/S1063776107050111. - Cited References: 26
. - ISSN 1063-7761РУБ Physics, Multidisciplinary Рубрики: NEUTRON-DIFFRACTION CHARGE DISPROPORTIONATION ELECTRONIC-STRUCTURE MAGNETIC ORDER TRANSITIONS PEROVSKITES PRNIO3 GAP Кл.слова (ненормированные): Crystal structure -- Manganites -- Optimization -- Thermal conductivity -- Thermal effects -- Bond fluctuations -- Nickelates -- Orthorhombic crystal structure -- Nickel compounds Аннотация: For the manganites RMnO(3) (R = La, Pr, Nd), a mechanism is proposed to explain the anomalous temperature dependences of the kinetic coefficients, resistivity, and thermoelectric power during the transition from the pseudocubic O to the orthorhombic O' crystal structure. The contributions of the bending and stretching modes of the octahedron to the formation of thermal-conductivity maxima and to the deviation from the linear dependence of ln(rho/T) on 1/T at low temperatures have been estimated. In nickelates, the metal-insulator transition is caused by lattice-polaron pinning by the stretching mode of the octahedron, and the low-temperature anomaly of the thermal conductivity is related to electron scattering by the bending mode of the octahedron.
WOS, Scopus, Читать в сети ИФ Держатели документа: Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia ИФ СО РАН Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation Reshetnev Siberian State Aerospace University, Krasnoyarsk, 660014, Russian Federation Доп.точки доступа: Аплеснин, Сергей Степанович } Найти похожие
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