Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Patoary, M. Atiqur R."'
Autor:
Khatun, M. Mousumi, Haque, M.M., Patoary, M. Atiqur R., Shorifuddoza, M., Khandker, Mahmudul H., Haque, A.K. Fazlul, Watabe, Hiroshi, Uddin, M. Alfaz
Publikováno v:
In Results in Physics October 2021 29
The wavefunction method provides us with a useful tool to describe electron correlations in solids at the ground state. In this paper we review the recent development of the momentum-dependent local ansatz wavefunction (MLA). It is constructed by tak
Externí odkaz:
http://arxiv.org/abs/1407.0077
The variational theory of momentum dependent local-ansatz (MLA) has been generalized by introducing a hybrid (HB) wavefunction as a starting wavefunction, whose potential can flexibly change from the Hartree-Fock type to the alloy-analogy type by var
Externí odkaz:
http://arxiv.org/abs/1306.4123
Autor:
Haque, A.K. Fazlul, Haque, M.M., Sultana, Sanjida, Patoary, M. Atiqur R., Hossain, M. Sohag, Maaza, M., Uddin, M. Alfaz
Publikováno v:
In Results in Physics December 2019 15
Momentum dependent local-ansatz (MLA) wavefunction describes accurately electron correlations from the weak to intermediate Coulomb interaction regimes. We point out that the MLA can describe the correlations from the weak to strong Coulomb interacti
Externí odkaz:
http://arxiv.org/abs/1211.5881
Momentum-dependent excitation spectra of the two-dimensional Hubbard model on the square lattice have been investigated at zero temperature on the basis of the full self-consistent projection operator method in order to clarify nonlocal effects of el
Externí odkaz:
http://arxiv.org/abs/1208.1153
Momentum dependent local-ansatz wavefunction approach (MLA) to the correlated electron systems in solids has been further developed to solve best a self-consistent equation for variational parameters at non half-filling. With use of the improved vari
Externí odkaz:
http://arxiv.org/abs/1109.1862
Autor:
Kakehashi, Y., Patoary, M. Atiqur R.
We have investigated the magnetic properties of Fe, Co, and Ni at finite temperatures on the basis of the first-principles dynamical coherent potential approximation (CPA) in order to clarify the role of the exchange interaction energy ($J$) screened
Externí odkaz:
http://arxiv.org/abs/1104.0099
Magnetic properties of Fe, Co, and Ni at finite temperatures have been investigated on the basis of the first-principles dynamical CPA (Coherent Potential Approximation) combined with the LDA (Local Density Approximation) + $U$ Hamiltonian in the Tig
Externí odkaz:
http://arxiv.org/abs/1103.1683
First-principles dynamical CPA (Coherent-Potential Approximation) for electron correlations has been developed further by taking into account higher-order dynamical corrections with use of the asymptotic approximation. The theory is applied to the in
Externí odkaz:
http://arxiv.org/abs/1006.3591