Analysis of the sequence of insulator-metal phase transitions at high pressure in systems with spin crossovers

Journal Article · Tue Jan 15 00:00:00 EST 2013 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776113010111· OSTI ID:22156438

Ovchinnikov, S. G., E-mail: [e-mail] ^[1]

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1. Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)

Possible variants of the Mott-Hubbard phase transitions at high pressure in systems with spin crossovers are considered. Owing to the universal character of the dependence of the effective Hubbard parameter U{sub eff}(d{sup n}) on the average number of d electrons, which is determined by the presence of spin crossovers, cascades of insulator-metal-insulator phase transitions in systems with d{sup 3}, d{sup 6}, and d{sup 8} configurations become possible. Moreover, the systems with d{sup 6} configuration can exhibit transitions from a metal in the absence of external pressure to an insulator at high pressure.

• OSTI ID: 22156438
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 116, Issue 1; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONFIGURATION
ELECTRONS
HUBBARD MODEL
METALS
PHASE TRANSFORMATIONS
SPIN