Electronic Structure of Stripes in Two-Dimensional Hubbard Model
نویسندگان
چکیده
منابع مشابه
Superconductivity in the two-dimensional Hubbard model.
A refined variational wave function for the two-dimensional repulsive Hubbard model is studied numerically , with the aim of approaching the difficult crossover regime of intermediate values of U. The issue of a superconducting ground state with d-wave symmetry is investigated for an average electron density n ≈ 0.8 and for U = 8t. Due to finite-size effects a clear-cut answer to this fundament...
متن کاملTwo-dimensional Hubbard model: Numerical simulation study.
We have studied the two-dimensional Hubbard model on a square lattice with nearest-neighbor hopping. We first discuss the properties of the model within the mean-field approximation: Because of the form of the band structure, some peculiar features are found. We then discuss the simulation algorithm used and compare simulation results with exact results for 6-site chains to test the reliability...
متن کاملHalf-filled stripes in the t-t-U Hubbard model
Using a self-consistent Hartree-Fock approximation we investigate the relative stability of various stripe phases in the extended t-t-U Hubbard model. One finds that a negative ratio of nextto nearest-neighbor hopping t/t < 0 expells holes from antiferromagnetic domains and reinforces the stripe order. Therefore the half-filled stripes not only accommodate holes but also redistribute them so th...
متن کاملCharge stripes in the two-orbital Hubbard model for iron pnictides
Qinlong Luo,1,2 Dao-Xin Yao,3 Adriana Moreo,1,2 and Elbio Dagotto1,2 1Department of Physics and Astronomy, The University of Tennessee, Knoxville, TN 37996 USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 32831 USA 3State Key Lab of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, ...
متن کاملFerromagnetism 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 کاملذخیره 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 the Physical Society of Japan
سال: 1999
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.68.4020