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Mott transition in the Hubbard model on anisotropic honeycomb lattice with implications for strained graphene: Gutzwiller variational study
Grzegorz Rut, Maciej Fidrysiak, Danuta Goc-Jagło +1
Modification of interatomic distances due to high pressure leads to exotic phenomena, including metallicity, superconductivity and magnetism, observed in materials not showing such…
Pairwise entanglement and the Mott transition for correlated electrons in nanochains
Adam Rycerz
Pairwise entanglement, calculated separately for charge and spin degrees of freedom, is proposed as a ground-state signature of the Mott transition in correlated nanoscopic systems…
Diatomic molecule as a quantum entanglement switch
Adam Rycerz
We investigate a pair entanglement of electrons in diatomic molecule, modeled as a correlated double quantum dot attached to the leads. The low-temperature properties are derived f…
The combined exact diagonalization - ab initio approach and its application to correlated electronic states and Mott-Hubbard localization in nanoscopic systems
J. Spalek, E. M. Gorlich, A. Rycerz +1
We overview the EDABI method developed recently and combining the exact diagonalization and ab initio aspects of electron states in correlated systems and apply it to nanoscopic sy…
Electronic structure and parity effects in correlated nanosystems
Adam Rycerz, Jozef Spalek
We discuss the spectral, transport and magnetic properties of quantum nanowires composed of N\leq 13 atoms and containing either even or odd numbers of valence electrons. In our ap…
Conductance of a double quantum dot with correlation-induced wave function renormalization
Adam Rycerz, Jozef Spalek
The zero-temperature conductance of diatomic molecule, modelled as a correlated double quantum dot attached to noninteracting leads is investigated. We utilize the Rejec-Ramsak for…
Entanglement and transport through correlated quantum dot
Adam Rycerz
We study quantum entanglement in a single-level quantum dot in the linear-response regime. The results show, that the maximal quantum value of the conductance 2e^2/h not always mat…
Fundamental properties, localization threshold, and the Tomonaga--Luttinger behavior of electrons in nanochains
Adam Rycerz, Jozef Spalek
We provide a fairly complete discussion of electronic properties of nanochains modelling the simplest quantum nanowires, within the recently proposed approach combining Exact Diago…
Electron localization in one dimension obtained from combined exact diagonalization - ab initio approach
Jozef Spalek, Adam Rycerz
Exact ground-state properties are presented by combining the diagonalization in the Fock space (and taking all hopping integrals and all two-site interactions) with the ab initio o…
Electronic states, Mott localization, electron-lattice coupling, and dimerization for correlated one-dimensional systems. II
Adam Rycerz, Jozef Spalek
We discuss physical properties of strongly correlated electron states for a linear chain obtained with the help of the recently proposed new method combining the exact diagonalizat…