Mott transition in the Hubbard model on the hyper-kagome lattice
| dc.creator | Lee, Hunpyo | |
| dc.creator | Monien, Hartmut | |
| dc.date | 2009-03-17 | |
| dc.date.accessioned | 2026-07-07T12:53:12Z | |
| dc.date.available | 2026-07-07T12:53:12Z | |
| dc.description | Motivated by recent experiment on the Na$_4$Ir$_3$O$_8$ compound we study the Hubbard model on the "hyper-kagome lattice", which forms a three-dimensional network of corner sharing triangles, using dynamical cluster approximation (DCA) method with $N_c$=12 combined with the continuous-time quantum Monte Carlo (CT QMC) method. The system undergoes a Mott transition if the Hubbard interaction $U/W$ ($W$ is the bandwidth) exceeds the value of 1.2 for $T$=0.1 and displays reentrant behavior due to competition between the magnetic correlation and the kinetic energy of electrons due to the geometrical frustration. We observe a "critical slowing down" of the double occupancy which shows evidence of a continuous transition. The nearest-neighbor and next nearest-neighbor spin-spin correlations indicate a paramagnetic metallic state in the weak-coupling regime and an antiferromagnetic (AF) Mott insulator in the strong-coupling regime within the temperature range which we can access with our numerical tools. | |
| dc.description | 4 pages and 6 figures | |
| dc.identifier | https://arxiv.org/abs/0903.3005 | |
| dc.identifier | http://arxiv.org/abs/0903.3005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223544 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Mott transition in the Hubbard model on the hyper-kagome lattice | |
| dc.type | text |