Ferromagnetism, spiral magnetic structures and phase separation in the two-dimensional 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

Phase separation in the two-dimensional Hubbard model.

E. Khatami,1,2 K. Mikelsons,1,2 D. Galanakis,1 A. Macridin,3 J. Moreno,1 R. T. Scalettar,4 and M. Jarrell1 1Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA 2Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA 3Fermilab, P.O. Box 500, Batavia, Illinois 60510, USA 4Department of Physics, University of California, Davis, C...

متن کامل

Ferromagnetism and triplet superconductivity in the two-dimensional Hubbard model

We review magnetic and superconducting instabilities in the t-t Hubbard model on the two-dimensional square lattice as obtained with functional one-loop renormalization group techniques. Special emphasis is put on ferromagnetic and triplet superconducting tendencies that could be relevant to the triplet superconductor Sr2RuO4. The layered perovskite oxide Sr2RuO4 may become the first well-estab...

متن کامل

Weak ferromagnetism and spiral spin structures in honeycomb Hubbard planes

Within the Hartree FockRPA analysis, we derive the spin wave spectrum for the weak ferromagnetic phase of the Hubbard model on the honeycomb lattice. Assuming a uniform magnetization, the polar (optical) and acoustic branches of the spin wave excitations are determined. The bipartite lattice geometry produces a qdependent phase difference between the spin wave amplitudes on the two sub-lattices...

متن کامل

Magnetic and superconducting correlations in the two-dimensional Hubbard model

The interplay and competition of magnetic and superconducting correlations in the weakly interacting two-dimensional Hubbard Model is investigated by means of the functional renormalization group. At zero temperature the flow of interactions in one-loop approximation evolves into a strong coupling regime at low energy scales, signalling the possible onset of spontaneous symmetry breaking. This ...

متن کامل

Magnetic correlations in the two-dimensional Anderson-Hubbard model

The two-dimensional Hubbard model in the presence of diagonal and off-diagonal disorder is studied at half-filling with a finite-temperature quantum Monte Carlo method. Magnetic correlations as well as the electronic compressibility are calculated to determine the behavior of local magnetic moments, the stability of antiferromagnetic long-range order ~AFLRO!, and properties of the disordered ph...

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: Journal of Magnetism and Magnetic Materials

سال: 2012

ISSN: 0304-8853

DOI: 10.1016/j.jmmm.2012.02.100