Kagome lattice Hubbard model at half filling

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Topological phases of the Kitaev-Hubbard model at half filling

The Kitaev-Hubbard model of interacting fermions is defined on the honeycomb lattice and, at strong coupling, interpolates between the Heisenberg model and the Kitaev model. It is basically a Hubbard model with ordinary hopping t and spin-dependent hopping t ′. We study this model in the weak to intermediate coupling regime, at half filling, using the cellular dynamical impurity approximation (...

متن کامل

Antiferromagnetism of the 2D Hubbard Model at Half Filling: Analytic Ground State at Weak Coupling

r n̂r↑n̂r↓. In Shf we study the many-body eigenstates of the kinetic energy with vanishing eigenvalue of the Hubbard repulsion (W = 0 states). In the Sz = 0 sector, this is a N times degenerate multiplet. From the singlet component one obtains the ground state of the Hubbard model for U = 0, which is unique in agreement with a theorem by Lieb. The wave function demonstrates an antiferromagnetic o...

متن کامل

The U = ∞ Hubbard model with few holes : Monte Carlo studies near half filling at nonzero temperatures

We present an efficient Monte Carlo method to study the properties of the infinitely repulsive Hubbard model with few holes at finite nonzero temperatures. Using this method, magnetic and specific heat results are presented for a 10× 10 lattice with two holes. Our results show that the magnetization increases with decreasing temperature for such a finite system.

متن کامل

Variational cluster approximation study of the one-dimensional Holstein-Hubbard model at half filling

The half-filled one-dimensional Holstein-Hubbard model presents, at zero temperature, a charge-density-wave (CDW) phase and a Mott insulator phase. Recent results have shown that the transition from one phase to the other might proceed through an intermediate metallic phase. In this work, we determine the CDW phase boundary using the variational cluster approximation. Using exact diagonalizatio...

متن کامل

Pressure - temperature phase diagram of generalized Hubbard model with correlated hopping at half - filling

In the present paper pressure-temperature phase diagram of a generalized Hub-bard model with correlated hopping in a paramagnetic state at half-filling is determined by means of the generalized mean-field approximation in the Green function technique. The constructed phase diagram describes metal-to-insulator transition with increasing temperature, and insulator-to-metal transition under the ac...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review B

سال: 2014

ISSN: 1098-0121,1550-235X

DOI: 10.1103/physrevb.90.081105