Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Zegrodnik, M."'
The spin dynamics in two electron double quantum dots embedded in two dimensional electron gas at the interface between SrTiO$_3$ and LaAlO$_3$ is studied by an exact numerical solution of the time-dependent Schr\"odinger equation, in the context of
Externí odkaz:
http://arxiv.org/abs/2404.14272
Publikováno v:
Phys. Rev. B 109, 155306 (2024)
We investigate the energy spectrum of a single and two electron quantum dot (QD) embedded in two dimensional electron gas at the interface between SrTiO$_3$ and LaAlO$_3$, in the presence of the external magnetic field. For this purpose the three ban
Externí odkaz:
http://arxiv.org/abs/2312.13862
Autor:
Zegrodnik, M., Biborski, A.
We analyze an analog of the $t$-$J$-$U$ model as applied to the description of a single moir\'e flat band of twisted WSe$_2$ bilayer. To take into account the correlation effects induced by a significant strength of the Coulomb repulsion, we use the
Externí odkaz:
http://arxiv.org/abs/2302.13841
Autor:
Zegrodnik, M., Wójcik, P.
We analyze the real-space paired state with the $\mathbf{k}$-dependent superconducting gap in the presence of Rashba type spin-orbit coupling and external magnetic field. We show that the $extended$ $s$-$wave$ pairing symmetry is the most probable sc
Externí odkaz:
http://arxiv.org/abs/2205.03632
We consider an electrostatically induced square lattice of quantum dots and study the role of electron-electron correlations in the resulting electronic features of the system. We utilize the Wannier functions methodology in order to construct Hamilt
Externí odkaz:
http://arxiv.org/abs/2109.14440
The two-dimensional electron gas at the interface between LaAlO$_3$ and SrTiO$_3$ (LAO/STO) exhibits gate tunable superconductivity with a characteristic dome-like shape of the critical temperature ($T_c$) in the phase diagram. As shown recently [Phy
Externí odkaz:
http://arxiv.org/abs/2106.12317
Publikováno v:
Phys. Rev. B 103, 144511 (2021)
We analyze the two-orbital (with $d_{x^2-y^2}$ and $d_{3z^2-r^2}$ orbitals) analogue of the $t$-$J$-$U$ model as applied to the description of the copper-oxide monolayer deposited on the Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ substrate (CuO$_2$/BSCCO). W
Externí odkaz:
http://arxiv.org/abs/2101.05503
The three-band Emery model is applied to study the selected principal features of the $d$-$wave$ superconducting phase in the copper-based compounds. The electron-electron correlations are taken into account by the use of the diagrammatic expansion o
Externí odkaz:
http://arxiv.org/abs/2009.04922
The three-band \emph{d-p} model is investigated by means of Variational Monte-Carlo (VMC) method with the BCS-like wave-function supplemented by the Gutzwiller and Jastrow correlators. The VMC optimization leads to $d$-$wave$ superconducting state wi
Externí odkaz:
http://arxiv.org/abs/2003.03117
Autor:
Zegrodnik, M., Wójcik, P.
Publikováno v:
Phys. Rev. B 102, 085420 (2020)
The two-dimensional electron gas (2DEG) at the LaAlO$_3$/SrTiO$_3$ interface exhibits gate tunable superconductivity with a domelike shape of $T_{\rm{C}}$ as a function of electron concentration. Here, we propose that the experimentally observed beha
Externí odkaz:
http://arxiv.org/abs/2001.09062