Zobrazeno 1 - 10
of 576
pro vyhledávání: '"Sandler N"'
Publikováno v:
Phys. Rev. B 109, 245403 (2024)
We study a system composed of graphene decorated with an array of islands with C_3v symmetry that induce quantum dot (IQD) regions via proximity effects and give rise to several spin-orbit couplings (SOCs). We evaluate transport properties for an arr
Externí odkaz:
http://arxiv.org/abs/2406.02393
Publikováno v:
Phys. Rev. B 101, 081410 (2020)
Previous works on deformed graphene predict the existence of valley-polarized states, however, optimal conditions for their detection remain challenging. We show that in the quantum Hall regime, edge-like states in strained regions can be isolated in
Externí odkaz:
http://arxiv.org/abs/1909.12017
Publikováno v:
Nano Lett., 2018, 18, 64
Confinement of electrons in graphene to make devices has proven to be a challenging task. Electrostatic methods fail because of Klein tunneling, while etching into nanoribbons requires extreme control of edge terminations, and bottom-up approaches ar
Externí odkaz:
http://arxiv.org/abs/1804.00207
Publikováno v:
Phys. Rev. B 94, 125422 (2016)
Deformations in graphene systems are central elements in the novel field of {\it straintronics}. Various strain geometries have been proposed to produce specific properties but their experimental realization has been limited. Because strained folds c
Externí odkaz:
http://arxiv.org/abs/1604.00732
Publikováno v:
Phys. Rev. B 90, 161403(R) (2014)
We study the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in p-doped transition metal dichalcogenides such as MoS$_2$ and WS$_2$. We consider magnetic impurities hybridized to the Mo d-orbitals characteristic of the valence bands. Using the Matsu
Externí odkaz:
http://arxiv.org/abs/1409.7649
Publikováno v:
J. Phys.: Condens. Matter 27 175301 (2015)
We study transport properties of hexagonal zigzag graphene quantum rings connected to semi-infinite nanoribbons. Open two-fold symmetric structures support localized states that can be traced back to those existing in the isolated six-fold symmetric
Externí odkaz:
http://arxiv.org/abs/1409.2583
Publikováno v:
(2014) Phys. Rev. B. 90(4): 041411
The coupling of geometrical and electronic properties is a promising venue to engineer conduction properties in graphene. Confinement added to strain allows for interplay of different transport mechanisms with potential device applications. To invest
Externí odkaz:
http://arxiv.org/abs/1405.1962
Publikováno v:
Phys. Rev. B 87, 241403(R) (2013)
We study the effects of strain on the electronic properties and persistent current characteristics of a graphene ring using the Dirac representation. For a slightly deformed graphene ring flake, one obtains sizable pseudomagnetic (gauge) fields that
Externí odkaz:
http://arxiv.org/abs/1305.0405
Publikováno v:
Phys. Rev. B 80, 041302(R) (2009)
We study the transport properties of a quantum dot embedded in an Aharonov-Bohm ring in the presence of spin-orbit interactions. Using a numerical renormalization group analysis of the system in the Kondo regime, we find that the competition of Aharo
Externí odkaz:
http://arxiv.org/abs/0902.3310
Publikováno v:
Physical Review B 80, 035119 (2009)
Transport properties of an interacting triple quantum dot system coupled to three leads in a triangular geometry has been studied in the Kondo regime. Applying mean-field finite-U slave boson and embedded cluster approximations to the calculation of
Externí odkaz:
http://arxiv.org/abs/0902.2926