Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Kurth, Stefan"'
A recently proposed analytical solution for the equations of motion of the one-body Green function of the double quantum dot is extended to the out-of-equilibrium situation. By solving a linear system for the density correlators, not only the local o
Externí odkaz:
http://arxiv.org/abs/2409.17064
A fully analytical approach based on the equation of motion technique to investigate the spectral properties and orbital occupations in an interacting double quantum dot in equilibrium is presented. By solving a linear system for the density correlat
Externí odkaz:
http://arxiv.org/abs/2406.19357
Publikováno v:
J. Chem Phys. 159, 154110 (2023)
In this paper we establish a connection between density functional theory (DFT) for lattice models and common real-space DFT. We consider the lattice DFT description of a two-level model subject to generic interactions in Mermin's DFT formulation in
Externí odkaz:
http://arxiv.org/abs/2308.01185
Publikováno v:
Phys. Rev. B 107, 195116 (2023)
The multi-terminal generalization of the steady-state density functional theory for the description of electronic and thermal transport (iq-DFT) is presented. The linear response regime of the framework is developed leading to exact expressions for t
Externí odkaz:
http://arxiv.org/abs/2303.01355
Publikováno v:
Phys. Rev. B 106, 195124 (2022)
The charge transport properties of zero-temperature multi-orbital quantum dot systems with one dot coupled to leads and the other dots coupled only capacitatively are studied within density functional theory. It is shown that the setup is equivalent
Externí odkaz:
http://arxiv.org/abs/2209.06754
Publikováno v:
Phys. Rev. B 104, 125115 (2021)
A new formalism to describe steady-state electronic and thermal transport in the framework of density functional theory is presented. A one-to-one correspondence is proven between the three basic variables of the theory, i.e., the density on as well
Externí odkaz:
http://arxiv.org/abs/2107.01940
Publikováno v:
Phys. Rev. Lett. 125, 216401 (2020)
We present a computationally efficient method to obtain the spectral function of bulk systems in the framework of steady-state density functional theory (i-DFT) using an idealized Scanning Tunneling Microscope (STM) setup. We calculate the current th
Externí odkaz:
http://arxiv.org/abs/2008.02723
Publikováno v:
Phys. Rev. B 102, 035159 (2020)
By reverse-engineering from exact solutions we obtain Hartree-exchange-correlation (Hxc) potentials for a double quantum dot subject to generic density-density interactions and Hund's rule coupling. We find ubiquitous step structures of the Hxc poten
Externí odkaz:
http://arxiv.org/abs/2002.07637
Publikováno v:
Phys. Rev. B 100, 195142 (2019)
The recently proposed density functional theory for steady-state transport (i-DFT) is extended to include temperature gradients between the leads. Within this framework, a general and exact expression is derived for the linear Seebeck coefficient whi
Externí odkaz:
http://arxiv.org/abs/1909.11019
Publikováno v:
Phys. Rev. B 100, 085114 (2019)
Multi-terminal transport setups allow to realize more complex measurements and functionalities (e.g., transistors) of nanoscale systems than the simple two-terminal arrangement. Here the steady-state density functional formalism (i-DFT) for the descr
Externí odkaz:
http://arxiv.org/abs/1905.13070