Zobrazeno 1 - 10
of 540
pro vyhledávání: '"Dınız G"'
Autor:
Diniz, G. S., Vernek, E.
Publikováno v:
Phys. Rev. B 109, 155127 (2024)
We have studied the Kondo effect of a spin-1/2 impurity coupled to a two-dimensional altermagnet host material. To attain the low-temperature many-body Kondo physics of the system, we have performed a numerical renormalization group calculations that
Externí odkaz:
http://arxiv.org/abs/2401.06065
Autor:
Diniz, G. S., Vernek, E.
Publikováno v:
Published in Phys. Rev. B 107, 045121 (2023)
In this work we investigate Majorana correlations in quantum impurities coupled to a topological superconducting wire. By employing a density matrix renormalization group approach, we have calculated the Majorana correlation functions in the ground s
Externí odkaz:
http://arxiv.org/abs/2208.09524
Publikováno v:
Phys. Rev. B 101, 125115 (2020)
Using NRG, we show that a system containing a quantum impurity (QI), strongly coupled to a semiconductor (gap $2 \Delta$) and weakly coupled to a metal, displays a 'reentrant' Kondo stage at low temperatures. The NRG analysis of the corresponding Sin
Externí odkaz:
http://arxiv.org/abs/2002.02569
Autor:
Kuriyama, E., Masubuchi, M., Koshikawa, N., Iwashita, R., Omata, A., Kanda, T., Kataoka, J., Tsurumi, M., Diniz, G., Enoto, T., Wada, Y.
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 1 January 2023 1045
Publikováno v:
Phys. Rev. B 98, 075423 (2018)
We present a proof-of-principle of how electronic transport measurements permits the observation of the Autler-Townes doublet, an optical property of nanodevices. The quantum physical system consists of one optically pumped quantum dot, a second auxi
Externí odkaz:
http://arxiv.org/abs/1805.01076
Autor:
Greene-Diniz, G., Grüning, M.
Publikováno v:
Phys. Rev. Applied 10, 044052 (2018)
First principles electronic structure calculations are carried out to investigate the band alignments of tensile strained (001) Ge interfaced with (001) In$_{x}$Al$_{1-x}$As. The sensitivities of band offsets to interfacial structure, interfacial sto
Externí odkaz:
http://arxiv.org/abs/1804.06789
Publikováno v:
Phys. Rev. B 97, 115444 (2018)
A detailed analysis of the Kondo effect of a magnetic impurity in a zigzag graphene nanoribbon is addressed. An adatom is coupled to the graphene nanoribbon via a hybridization amplitude $\Gamma_{imp}$ in a hollow or top site configuration. In additi
Externí odkaz:
http://arxiv.org/abs/1710.01617
Publikováno v:
Phys. Status Solidi RRL, 1-6 (2016)
We propose a physical model based on disordered (a hole punched inside a material) monolayer transition metal dichalcogenides (TMDs) to demonstrate a large-gap quantum valley Hall insulator. We find an emergence of bound states lying inside the bulk
Externí odkaz:
http://arxiv.org/abs/1601.06728
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures, Vol.85, pp. 264-270 (2017)
We investigate the spin-resolved transport in a two-terminal zigzag graphene nanoribbon device with two independent gate induced Rashba spin-orbit coupling regions and in the presence of strain. By employing a recursive Green's function technique to
Externí odkaz:
http://arxiv.org/abs/1512.05436
Publikováno v:
J. Appl. Phys. 114, 243701 (2013)
We theoretically investigate the manipulation of the quantum anomalous Hall effect (QAHE) in graphene by means of the uniaxial strain. The values of Chern number and Hall conductance demonstrate that the strained graphene in presence of Rashba spin-o
Externí odkaz:
http://arxiv.org/abs/1310.4468