MAGNETIC PHASE DIAGRAM OF THE HUBBARD MODEL ON THE AB2 CHAIN

2013 ◽  
Vol 27 (20) ◽  
pp. 1350144
Author(s):  
A. C. NASCIMENTO ◽  
ANDRE M. C. SOUZA
Keyword(s):  
Phase Diagram ◽  
Magnetic Properties ◽  
Hubbard Model ◽  
Function Method ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Electron Interaction ◽  
Hartree Fock ◽  
Band Filling ◽  
Complete Investigation

In this paper, a complete investigation of the magnetic properties of the Hubbard model on the AB2 chain is presented. We evaluate the magnetic phase diagram as a function of the electron–electron interaction and band filling by using the Green's function method within the Hartree–Fock approximation. Our results are in agreement with Lieb's theorem and the system shows ferromagnetic, ferrimagnetic, and paramagnetic phases.

MAGNETIC PROPERTIES OF PSEUDO-BINARY Mn1−xFexSn2 ALLOYS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 867-870 ◽  
Author(s):  
H. SHIRAISHI ◽  
T. HORI ◽  
Y. YAMAGUCHI ◽  
S. FUNAHASHI ◽  
K. KANEMATSU
Keyword(s):  
Field Theory ◽  
Phase Diagram ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
High Temperature ◽  
Magnetic Structure ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Molecular Field ◽  
Magnetic Phases

The magnetic susceptibility measurements have been made on antiferromagnetic compounds Mn1–xFexSn2 and the magnetic phase diagram was illustrated. The high temperature magnetic phases I and III, major phases, were analyzed on the basis of molecular field theory and explained the change of magnetic structure I⇌III occured at x≈0.8.

scholarly journals Incommensurate Spin-Density Wave in Two-Dimensional Hubbard Model

2012 ◽  
Vol 190 ◽  
pp. 67-70 ◽  
Author(s):  
M.A. Timirgazin ◽  
Anatoly K. Arzhnikov ◽  
A.V. Vedyayev
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Ground State ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Magnetic Phase Diagram ◽  
Two Dimensional ◽  
Magnetic Phases ◽  
Model Relation

We consider the magnetic phase diagram of the two-dimensional Hubbard model ona square lattice.We take into account both spiral and collinear incommensurate magnetic states.The possibility of phase separation of spiral magnetic phases is taken into consideration as well.Our study shows that all the listed phases appear to be the ground state at certain parametersof the model. Relation of the obtained results to real materials, e.g. Cu-based high-temperaturesuperconductors, is discussed.

Magnetic phase diagram of the anisotropic multi-band Hubbard model

2007 ◽  
Vol 244 (7) ◽  
pp. 2331-2337 ◽  
Author(s):  
P. G. J. van Dongen ◽  
C. Knecht ◽  
N. Blümer
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Multi Band

Magnetic properties and magnetic phase diagram of (RE) Ba2Cu3Ox system studied by positive muon spin relaxation

1988 ◽  
Vol 153-155 ◽  
pp. 761-762 ◽  
Author(s):  
N. Nishida ◽  
H. Miyatake ◽  
D. Shimada ◽  
S. Okuma ◽  
T. Yamazaki ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Magnetic Properties ◽  
Spin Relaxation ◽  
Magnetic Phase ◽  
Muon Spin ◽  
Magnetic Phase Diagram ◽  
Muon Spin Relaxation ◽  
Positive Muon
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