Zobrazeno 1 - 10
of 371
pro vyhledávání: '"Lipiński S"'
Autor:
Krychowski, D., Lipiński, S.
Publikováno v:
J. Mag. Mag. Mat. 588, 171416 (2023)
We investigate two equivalent capacitively and tunnel coupled quantum dots, each coupled to its own pair of leads. Local Holstein type electron-phonon coupling at the dots is assumed. To study many-body effects we use the finite-U mean-field slave bo
Externí odkaz:
http://arxiv.org/abs/2311.10509
Publikováno v:
Archives of Metallurgy and Materials, Vol 60, Iss 4, Pp 2663-2670 (2015)
In this paper the possibility of using X-ray computed tomography (CT) in quantitative metallographic studies of homogeneous and composite materials is presented. Samples of spheroidal cast iron, Fe-Ti powder mixture compact and epoxy composite reinfo
Externí odkaz:
https://doaj.org/article/1cb720b39257439299287ff063d4192a
Autor:
Florków, P., Lipiński, S.
Publikováno v:
Beilstein J. Nanotechnol. 12, 1209 (2021)
We calculate the conductance through strongly correlated T-shaped molecular or quantum dot systems under the influence of phonons. The system is modelled by the extended Anderson-Holstein Hamiltonian. The finite-U mean-field slave boson approach is u
Externí odkaz:
http://arxiv.org/abs/2112.10829
Autor:
Krychowski, D., Lipiński, S.
Publikováno v:
J. Mag. Mag. Mat. 546, 168795 (2022)
Spin polarized transport through a quantum dot coupled to ferromagnetic electrodes with noncollinear magnetizations is discussed in terms of nonequilibrium Green functions formalism in the finite-U slave boson mean field approximation. The difference
Externí odkaz:
http://arxiv.org/abs/2112.04765
Publikováno v:
J. Mag, Mag. Mat. 541, 168564 (2022)
Strong electron correlations are discussed for the three capacitively coupled quantum dots, each of which is connected to a separate pair of electrodes. The finite-$U$ mean field slave boson approach is used. The analysis is carried out for both repu
Externí odkaz:
http://arxiv.org/abs/2111.14526
Publikováno v:
Acta Phys. Pol. A 137, 747 (2020)
The effect of electron-phonon coupling on transport through a pair of strongly correlated quantum dots embedded in the Aharonov-Bohm ring is considered in the mean field slave boson Kotliar-Ruckenstein approach. It is shown that coupling with phonons
Externí odkaz:
http://arxiv.org/abs/2010.01960
Autor:
Krychowski, D., Lipiński, S.
Publikováno v:
J. Mag. Magn. Mat. 497, 166050 (2020)
Using the slave boson Kotliar-Ruckenstein approach (SBMFA) for N level Anderson model, we compare fully symmetric SU(N) Kondo resonances occurring for spin and orbital conserving tunneling with many-body resonances for the dot with broken symmetry ca
Externí odkaz:
http://arxiv.org/abs/2009.14122
We study magnetoconductance of the small bandgap carbon nanotube quantum dots in the presence of spin-orbit coupling in the strong correlations regime. The finite-U mean field slave boson approach is used to study many-body effects. Different degener
Externí odkaz:
http://arxiv.org/abs/2009.11052
Spin-polarized transport through a quantum dot side attached to a topological superconductor and coupled to a pair of normal leads is discussed in Coulomb and Kondo regimes. For discussion of Coulomb range equation of motion method with extended Hubb
Externí odkaz:
http://arxiv.org/abs/1712.04782
Strong electron correlations and interference effects are discussed in capacitively coupled side attached and embedded quantum dots. The finite - U mean field slave boson approach is used to study many-body effects. In the linear range the many-body
Externí odkaz:
http://arxiv.org/abs/1709.08859