A Microscopic Model for Ferromagnetism of UGe_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
スポンサーリンク
概要
- 論文の詳細を見る
We construct a microscopic Hamiltonian for the ferromagnetism of UGe_2 by taking account of the orbital degeneracy of the 5-f electrons and investigate possible phases by the Hartree-Fock approximation. We reduce the number of mean values to be determined by assuming the magnetic orders where the coplanar magnetic moments perpendicular to the c-axis constitute an a-axis moment as a whole. Because of the orbital degeneracy, the anisotropies of the crystalline electric field term and the hopping term competes with each other. Moreover occupation number in each atomic orbit is sensitive to the relation between the crystalline electric field and the Coulomb interaction. In consequence, a rich ground state phase diagram with various different ferromagnetic orders is obtained.
- 社団法人日本物理学会の論文
- 2004-06-15
著者
-
Ueda Kazuo
Institiute For Solid State Physics University Of Tokyo
-
HIROHASHI Kyuichi
Institute for Solid State Physics, University of Tokyo
-
Hirohashi Kyuichi
Institute For Solid State Physics University Of Tokyo
関連論文
- Insulating Charge Density Wave for a Half-Filled SU(N) Hubbard Model with an Attractive On-Site Interaction in One Dimension(Condensed matter : electronic structure and electrical, magnetic, and optical properties)
- Theory of Fano-Kondo Effect of Transport Properties through Quantum Dots(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Field-Induced Gap Formation in Yb_4As_3
- Conductance through Quantum Dots Studied by Finite Temperature DMRG (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Susceptibilities of Sr (Cu_Zn_x)_2O_3 Studied by Quantum Monte Carlo Simulation
- Effect of Quantum Fluctuations on Magnetic Ordering in CaV_3O_7
- Internal Vortex Structure Change in a Thin Film for an Unconventional Superconductor
- Unconventional Superconductivity in a Thin Film
- Enforced Time-Reversal Breakdown in Unconventional Superconductors
- Time-Dependent DMRG Study on Quantum Dot under a Finite Bias Voltage(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Effective Hamiltonian for Charge-Ordered Yb_4As_3 : Condensed Matter: Electronic Properties, etc.
- Quantum Monte Carlo Simulation of the Trellis Lattice Heisenberg Model for SrCu_2O_3 and CaV_2O_5
- Thermodynamic Properties of the One-Dimensional Kondo Insulators Studied by the Density Matrix Renormalization Group Method
- Two- and three dimensional frustrated spin systems(New Developments in Strongly Correlated Electron Systems)
- Critical Exponents of the Quantum Phase Transition in a Planar Antiferromagnet
- Spin Fluctuation-Induced Superconductivity in Two and Three Dimensional Systems
- Contribution of Spin Fluctuations to the Electrical and Thermal Resistivities of Weakly and Nearly Ferromagnetic Metals
- Single Electron in the Kondo Lattice
- Conductance of Two-Dimensional Quasicrystals : II. LOW TEMPERATURE PROPERTIES OF SOLIDS : Miscellaneous : Phonon, Structure etc.
- 22aZD-5 Insulator to superfluid transition in coupled photonic cavities in two dimensions
- Dynamic Properties of the One-Dimensional Kondo Insulators Studied by the Density Matrix Renormalization Group Method
- Antiferromagnetic Spin Fluctuations and Superconductivity in Two-Dimensional Metals : A Possible Model for High T_c Oxide
- Numerical Study of the One-Dimensional Spin-Orbit Coupled System with SU(2)〓SU(2) Symmetry : Condensed Matter: Electronic Properties, etc
- Nuclear Magnetic Relaxation in Weakly Antiferromagnetic Metals
- Effect of Anharmonicity on the Kondo Phenomena of a Magnetic Ion Vibrating in a Confinement Potential
- Kondo Effect of a Magnetic Ion Vibrating in a Harmonic Potential
- Numerical Diagonalization of the Periodic Anderson Model─Ground State and Magnetization Process─
- Green's Function of Fully Anharmonic Lattice Vibration(Condensed matter: structure and mechanical and thermal properties)
- Electrical Resistivity of Antiferromagnetic Metals
- Magnetic Excitations in an Itinerant Antiferromagnet
- Nonequilibrium Current in the One Dimensional Hubbard Model at Half-Filling
- A Microscopic Model for Ferromagnetism of UGe_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
- Spin Fluctuation Spectra and High Temperature Superconductivity
- Thermodynamic Properties of the S=1/2 Heisenberg Chain with Staggered Dzyaloshinsky–Moriya Interaction
- Ground State Properties of the Kondo Lattice
- Kondo Effect of a Vibrating Magnetic Impurity
- Anharmonicity in One-Dimensional Electron–Phonon System
- Out-of-Equilibrium Transport Phenomena through a Quantum Dot in a Magnetic Field(Kondo Effect-40 Years after the Discovery)