213 citations · 1.3k across the 34 of their papers we have counts for
34 papers
Ferromagnetism in armchair graphene nanoribbon heterostructures
P. A. Almeida, L. S. Sousa, Tome M. Schmidt +1
We study the properties of flat-bands that appear in a heterostructure composed of strands of different widths of graphene armchair nanoribbons. One of the flat-bands is reminiscen…
Spin-orbit coupling effects over thermoelectric transport properties in quantum dots
M. A. Manya, G. B. Martins, M. S. Figueira
We study the effects caused by Rashba and Dresselhaus spin-orbit coupling over the thermoelectric transport properties of a single-electron transistor, viz., a quantum dot connecte…
Anisotropic Kondo screening induced by spin-orbit coupling in quantum wires
E. Vernek, G. B. Martins, R. Zitko
Using the numerical renormalization group (NRG) method we study a magnetic impurity coupled to a quantum wire with Rashba and Dresselhaus spin-orbit coupling (SOC) in an external m…
Reentrant Kondo effect in a quantum impurity coupled to a metal-semiconductor hybrid contact
G. Diniz, G. S. Diniz, G. B. Martins +1
Using NRG, we show that a system containing a quantum impurity (QI), strongly coupled to a semiconductor (gap ) and weakly coupled to a metal, displays a 'reentrant' Kondo sta…
The crossover and spin filter properties of a double quantum dot nanosystem
V. Lopes, R. A. Padilla, G. B. Martins +1
The crossover, driven by an external magnetic field , is analyzed in a capacitively-coupled double-quantum-dot device connected to independent leads. As one contin…
Spatial structure of correlations around a quantum impurity at the edge of a two-dimensional topological insulator
Andrew Allerdt, Adrian E. Feiguin, George B. Martins
We calculate exact zero-temperature real space properties of a substitutional magnetic impurity coupled to the edge of a zigzag silicene-like nanoribbon. Using a Lanczos transforma…