Abstract
We study metal-insulator transitions between Mott insulators and metals. The transition mechanism completely different from the original dynamical mean field theory (DMFT) emerges from a cluster extension of it. A consistent picture suggests that the quasiparticle weight Z remains nonzero through metals and suddenly jumps to zero at the transition, while the gap opens continuously in the insulators. This is in contrast with the original DMFT, where Z continuously vanishes but the gap opens discontinuously. The present results arising from electron differentiation in momentum space agree with recent puzzling bulk-sensitive experiments on CaV O3 and SrV O3.
| Original language | English |
|---|---|
| Article number | 045108 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 76 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2007 Jul 17 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Pseudogap and Mott transition studied by cellular dynamical mean-field theory. / Zhang, Y. Z.; Imada, Masatoshi.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 76, No. 4, 045108, 17.07.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pseudogap and Mott transition studied by cellular dynamical mean-field theory
AU - Zhang, Y. Z.
AU - Imada, Masatoshi
PY - 2007/7/17
Y1 - 2007/7/17
N2 - We study metal-insulator transitions between Mott insulators and metals. The transition mechanism completely different from the original dynamical mean field theory (DMFT) emerges from a cluster extension of it. A consistent picture suggests that the quasiparticle weight Z remains nonzero through metals and suddenly jumps to zero at the transition, while the gap opens continuously in the insulators. This is in contrast with the original DMFT, where Z continuously vanishes but the gap opens discontinuously. The present results arising from electron differentiation in momentum space agree with recent puzzling bulk-sensitive experiments on CaV O3 and SrV O3.
AB - We study metal-insulator transitions between Mott insulators and metals. The transition mechanism completely different from the original dynamical mean field theory (DMFT) emerges from a cluster extension of it. A consistent picture suggests that the quasiparticle weight Z remains nonzero through metals and suddenly jumps to zero at the transition, while the gap opens continuously in the insulators. This is in contrast with the original DMFT, where Z continuously vanishes but the gap opens discontinuously. The present results arising from electron differentiation in momentum space agree with recent puzzling bulk-sensitive experiments on CaV O3 and SrV O3.
UR - http://www.scopus.com/inward/record.url?scp=34447553350&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34447553350&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.76.045108
DO - 10.1103/PhysRevB.76.045108
M3 - Article
VL - 76
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 4
M1 - 045108
ER -