Disorder and Interaction in 2D: Exact Diagonalization Study of the Anderson-Hubbard-Mott Model

نویسندگان
چکیده

برای دانلود رایگان 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

Disorder and interaction in 2D: exact diagonalization study of the Anderson-Hubbard-Mott model.

We investigate, by numerically calculating the charge stiffness, the effects of random diagonal disorder and electron-electron interaction on the nature of the ground state in the 2D Hubbard model through the finite-size exact diagonalization technique. By comparing with the corresponding 1D Hubbard model results and by using heuristic arguments we conclude that it is unlikely that there is a 2...

متن کامل

0 Disorder and Interaction in 2 D : Exact diagonalization study of the Anderson - Hubbard - Mott model

We investigate, by numerically calculating the charge stiffness, the effects of random diagonal disorder and electron-electron interaction on the nature of the ground state in the 2D Hubbard model through the finite size exact diagonalization technique. By comparing with the corresponding 1D Hubbard model results and by using heuristic arguments we conclude that it is unlikely that there is a 2...

متن کامل

Exact diagonalization: the Bose–Hubbard model as an example

We take the Bose–Hubbard model to illustrate exact diagonalization techniques in a pedagogical way. We follow the route of first generating all the basis vectors, then setting up the Hamiltonian matrix with respect to this basis and finally using the Lanczos algorithm to solve low lying eigenstates and eigenvalues. Emphasis is placed on how to enumerate all the basis vectors and how to use the ...

متن کامل

Mott Quantum Criticality in the Anisotropic 2D Hubbard Model.

We present evidence for Mott quantum criticality in an anisotropic two-dimensional system of coupled Hubbard chains at half-filling. In this scenario emerging from variational cluster approximation and cluster dynamical mean-field theory, the interchain hopping t_{⊥} acts as a control parameter driving the second-order critical end point T_{c} of the metal-insulator transition down to zero at t...

متن کامل

Mott–Hubbard and Anderson Transitions in Dynamical Mean–Field Theory

The Anderson–Hubbard Hamiltonian at half–filling is investigated within dynamical mean–field theory at zero temperature. The local density of states is calculated by taking the geometric and arithmetic mean, respectively. The non–magnetic ground state phase diagrams obtained within the different averaging schemes are compared.

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 Letters

سال: 2001

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.86.2388