Magnetic correlations around the Mott transition in the Kagomé lattice Hubbard model

Abstract

We study the magnetic properties around the Mott transition in the Kagomé lattice Hubbard model by the cellular dynamical mean field theory combined with quantum Monte Carlo simulations. By investigating the q-dependence of the susceptibility, we find a dramatic change of the dominant spin fluctuations around the Mott transition. The spin fluctuations in the insulating phase favor down to the lowest temperature a spatial spin configuration in which antiferromagnetic correlations are strong only in one chain direction but almost vanishing in the others.

6 pages, 4 figures, accepted for publication in J. Phys. Condens. Matter. (Proceedings of Highly Frustrated Magnetism 2006)

References in corpus (3)

• Mott Transition, Antiferromagnetism, and d-wave Superconductivity in Two-Dimensional Organic Conductors
• Mott transition in Kagomé lattice Hubbard model
• Spin-Charge Separation in Two-dimensional Frustrated Quantum Magnets

Cited by in corpus (4)

• Magnetization Process of Kagome-Lattice Heisenberg Antiferromagnet
• How correlations change the magnetic structure factor of the kagome Hubbard model
• Charge order in the kagome lattice Holstein model: A hybrid Monte Carlo study
• Hubbard model on the kagome lattice with time-reversal invariant flux and spin-orbit coupling