Quench of paramagnetic orbital selective Mott phase and appearance of antiferromagnetic orbital selective slater phase in multiorbital correlated systems
| Autor: | Hai-Qing Lin, Ya-Min Quan, Liang-Jian Zou, Da-Yong Liu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Condensed matter physics Electronic correlation Atomic force microscopy Mott insulator Condensed Matter Physics 01 natural sciences Spectral line 010305 fluids & plasmas Electronic Optical and Magnetic Materials Paramagnetism Ferromagnetism 0103 physical sciences Quasiparticle Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 456:329-332 |
| ISSN: | 0304-8853 |
| Popis: | We present the modulation of magnetic order on the orbital selective Mott phases (OSMP) and the metal-insulator transitions (MIT) of multi-orbital Hubbard models by employing the rotationally invariant slave-boson methods. We show that at half filling, the well-known paramagnetic (PM) OSMP is completely covered by an antiferromagnetic (AFM) Slater insulator, and the PM Mott phase by an AFM Mott insulator when electron correlation strength varies from intermediate to strong both in two- and three-orbitals Hubbard systems. Away from half-filling, we find that a partial-polarized AFM orbital-selective Slater phase appears in the intermediate correlation regime, and an almost full-polarized AFM OSMP fully covers the paramagnetic OSMP. In addition, the ferromagnetic phase in the three-orbital case is more robust than that in the two-orbital case. These results demonstrate that the modulation of magnetic correlation to the quasiparticle spectra leads to much rich and more interesting MIT scenario in multiorbital correlated systems. |
| Databáze: | OpenAIRE |
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