Magnetic-order-driven topological transition in the Haldane-Hubbard model

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 Phase Transitions in the Repulsively Interacting Haldane-Hubbard Model.

Using dynamical mean-field theory and exact diagonalization we study the phase diagram of the repulsive Haldane-Hubbard model, varying the interaction strength and the sublattice potential difference. In addition to the quantum Hall phase with Chern number C=2 and the band insulator with C=0 present already in the noninteracting model, the system also exhibits a C=0 Mott insulating phase, and a...

متن کامل

Mass enhancement and magnetic order at the Mott-Hubbard transition.

We study the evolution with pressure P and band filling y of the heat capacity, Hall coefficient, and resistivity at the approach to the T~O Mott-Hubbard metal-insulator transition (MIT) in highly correlated V2 ~03. Under P, the electronic effective mass m diverges at the MIT with a negligible change in carrier concentration n away from half-filling. Conversely, in the doped system m actually d...

متن کامل

Dimensional-crossover-driven Mott transition in the frustrated Hubbard model.

We study the Mott transition in a frustrated Hubbard model with next-nearest neighbor hopping at half-filling. The interplay between interaction, dimensionality, and geometric frustration closes the one-dimensional Mott gap and gives rise to a metallic phase with Fermi surface pockets. We argue that they emerge as a consequence of remnant one-dimensional umklapp scattering at the momenta with v...

متن کامل

Reentrant Charge Order Transition in the Extended Hubbard Model

We study the extended Hubbard model with both on-site and nearest neighbor Coulomb repulsion (U and V , respectively) in the dynamical mean field theory. At quarter filling, the model shows a transition to a charge ordered phase with different sublattice occupancies nA fi nB. The effective mass increases drastically at the critical V and a pseudogap opens in the single-particle spectral functio...

متن کامل

Mott Transition in the Hubbard Model

In this article, I discuss W.Kohn’s criterion for a metal insulator transition, within the framework of a one band Hubbard model. This and related ideas are applied to 1-dimensional Hubbard systems, and some intersting miscellaneous results discussed. The Jordan Wigner transformation converting the two species of fermions to two species of hardcore bosons is performed in detail, and the “extra ...

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: 2015

ISSN: 1098-0121,1550-235X

DOI: 10.1103/physrevb.91.161107