Zobrazeno 1 - 10
of 830
pro vyhledávání: '"A. Bouhlal"'
We show how the Aharonov-Bohm flux (AB) $\phi_i$ and the dual gaps $(\Delta_1, \Delta_2)$ can affect the electron scattering in graphene quantum dots (GQDs) of radius $r_0$ in the presence of an electrostatic potential $V$. After obtaining the soluti
Externí odkaz:
http://arxiv.org/abs/2409.13659
The aim of this article is to determine the dynamic response of the railway system composed of train, track and bridge, suggesting a method for assembling the elementary matrices to obtain differential equations of the overall system. The model studi
Externí odkaz:
http://arxiv.org/abs/2406.14837
We address the question of how the Aharonov-Bohm flux $\Phi_{AB}$ can affect the energy levels of graphene magnetic quantum dots (GMQDs) of radius $R$. To answer this question, we consider GMQDs induced by a magnetic field $B$ and subjected to two di
Externí odkaz:
http://arxiv.org/abs/2405.20186
We consider magnetic graphene quantum dots (MGQDs) and study the impact of the Aharonov-Bohm (AB) flux and gap on the scattering process of electrons. Our emphasis is on the finite lifetimes of quasi-bound states arising from the interaction between
Externí odkaz:
http://arxiv.org/abs/2403.02206
Boosting energy levels in graphene magnetic quantum dots through magnetic flux and inhomogeneous gap
Publikováno v:
Physica B 685 (2024) 416005
We study the effects of a magnetic flux and an inhomogeneous gap on the energy spectrum of graphene magnetic quantum dots (GMQDs). By considering the Dirac equation in the infinite mass framework, we can analytically obtain eigenspinor expressions. B
Externí odkaz:
http://arxiv.org/abs/2402.07014
We investigate the energy levels of fermions within a circular graphene quantum dot (GQD) subjected to external magnetic and Aharonov-Bohm fields. Solving the eigenvalue equation for two distinct regions allows us to determine the eigenspinors for th
Externí odkaz:
http://arxiv.org/abs/2312.12324
Publikováno v:
Physica B 675 (2024) 415610
It is known that the appearance of Klein tunneling in graphene makes it hard to keep or localize electrons in a graphene-based quantum dot (GQD). However, a magnetic field can be used to temporarily confine an electron that is traveling into a GQD. T
Externí odkaz:
http://arxiv.org/abs/2308.12922
Publikováno v:
Ziglôbitha, Vol 04, Iss 011, Pp 71-88 (2024)
Abstract: The importance of green spaces is evident in the UN global environment slogan. Day (held annually on June 5), which was held in North America, in San Francisco in 2005, under the theme "Green Cities: Planning for the Planet". The focus was
Externí odkaz:
https://doaj.org/article/90fa7ccb5c0142f49797fc7dce99c0ae
Publikováno v:
Comput. Mater. Sci. 231 (2024) 112573
Owing to the Klein tunneling phenomenon, the permanent confinement or localization of electrons within a graphene quantum dot is unattainable. Nonetheless, a constant magnetic field can transiently ensnare an electron within the quantum dot, giving r
Externí odkaz:
http://arxiv.org/abs/2301.11211
We investigate the effects of wedge disclination on charge carriers in circular graphene quantum dots subjected to a magnetic flux. Using the asymptotic solutions of the energy spectrum for large arguments, we approximate the scattering matrix elemen
Externí odkaz:
http://arxiv.org/abs/2208.04920