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Anomalously large conductance fluctuations in weakly disordered graphene
A. Rycerz, J. Tworzydlo, C. W. J. Beenakker
We have studied numerically the mesoscopic fluctuations of the conductance of a graphene strip (width W large compared to length L), in an ensemble of samples with different realiz…
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…
Valley filter and valley valve in graphene
A. Rycerz, J. Tworzydlo, C. W. J. Beenakker
It is known that the lowest propagating mode in a narrow ballistic ribbon of graphene may lack the twofold valley degeneracy of higher modes. Depending on the crystallographic orie…
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…
Quantum-limited shot noise in graphene
J. Tworzydlo, B. Trauzettel, M. Titov +2
We calculate the mode-dependent transmission probability of massless Dirac fermions through an ideal strip of graphene (length L, width W, no impurities or defects), to obtain the…