Аннотация: We predict the insulator-metal-insulator transitions for the temperature and pressure of the lower mantle with the metal layer thickness Delta h a parts per thousand 400 km at the depth of 1400-1800 km. The insulator-metal transition has the Mott-Hubbard origin, while the second transition from metal to insulator results from spin crossover of the Fe2+ ions from high spin S = 2 to low spin S = 0 state. The conductivity in the metal layer may attain 250 S/m. The depth profile of the conductivity is also suggested.
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Держатели документа:
[Ovchinnikov, S. G.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Ovchinnikova, T. M.] Russian Acad Sci, Sukhachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Dyad'kov, P. G.
Plotkin, V. V.] Russian Acad Sci, Siberian Branch, Trofimuk Inst Petr Gas Geol & Geophys, Novosibirsk 630090, Russia
[Litasov, K. D.] Russian Acad Sci, Siberian Branch, Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia
Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Ovchinnikova, T. M.; Dyad'kov, P. G.; Plotkin, V. V.; Litasov, K. D.