Specific features of insulator-metal transitions under high pressure in crystals with spin crossovers of 3d ions in tetrahedral environment
Journal Article
·
· Journal of Experimental and Theoretical Physics
- Russian Academy of Sciences, Sukachev Institute of Forest, Siberian Branch (Russian Federation)
For Mott insulators with tetrahedral environment, the effective Hubbard parameter U{sub eff} is obtained as a function of pressure. This function is not universal. For crystals with d{sup 5} configuration, the spin crossover suppresses electron correlations, while for d{sup 4} configurations, the parameter U{sub eff} increases after a spin crossover. For d{sup 2} and d{sup 7} configurations, U{sub eff} increases with pressure in the high-spin (HS) state and is saturated after the spin crossover. Characteristic features of the insulator-metal transition are considered as pressure increases; it is shown that there may exist cascades of several transitions for various configurations.
- OSTI ID:
- 22472429
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 1 Vol. 120; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of the sequence of insulator-metal phase transitions at high pressure in systems with spin crossovers
Effect of spin crossovers on the Mott-Hubbard transition at high pressures
Spin-crossover-induced Mott transition and the other scenarios of metallization in 3d[superscript n] metal compounds
Journal Article
·
Mon Jan 14 23:00:00 EST 2013
· Journal of Experimental and Theoretical Physics
·
OSTI ID:22156438
Effect of spin crossovers on the Mott-Hubbard transition at high pressures
Journal Article
·
Tue Jul 15 00:00:00 EDT 2008
· Journal of Experimental and Theoretical Physics
·
OSTI ID:21241974
Spin-crossover-induced Mott transition and the other scenarios of metallization in 3d[superscript n] metal compounds
Journal Article
·
Wed Apr 08 00:00:00 EDT 2009
· Phys. Rev. B
·
OSTI ID:1005546