Zobrazeno 1 - 10
of 1 239
pro vyhledávání: '"Park, H C"'
We propose a nanomechanical device which can actuate and probe a flying qubit that can be used to facilitate quantum information transfer over a long distance. The flying qubit is formed by a movable Cooper pair box (CPB) consisting of a superconduct
Externí odkaz:
http://arxiv.org/abs/2310.13233
Using a tight-binding model along with the mean-field Hubbard method, we investigate the effect of twisting angle on the magnetic properties of twisted bilayer graphene (tBLG) quantum dots (QDs) with triangular shape and zigzag edges. We consider suc
Externí odkaz:
http://arxiv.org/abs/2304.06228
Graphene matter in a strong magnetic field, realizing one-dimensional quantum Hall channels, provides a unique platform for studying electron interference. Here, using the Landauer-B\"uttiker formalism along with the tight-binding model, we investiga
Externí odkaz:
http://arxiv.org/abs/2205.12508
Publikováno v:
Low Temp. Phys. 48, 476 (2022)
A nanoelectromechanical weak link composed of a carbon nanotube suspended between two normal electrodes in a gap between two superconducting leads is considered. The nanotube is treated as a movable single-level quantum dot in which the position-depe
Externí odkaz:
http://arxiv.org/abs/2202.08009
We consider a nanoelectromechanical system composed of a carbon nanotube suspended between two normal leads and coupled to a superconducting scanning tunneling microscope (STM) tip via vacuum tunnel barrier. Treating the nanotube as a single-level qu
Externí odkaz:
http://arxiv.org/abs/2202.07924
Publikováno v:
New Journal of Physics 24, 033008 (2022)
We consider a nanoelectromechanical weak link composed of a carbon nanotube suspended above a trench in a normal metal electrode and positioned in a gap between two superconducting leads. The nanotube is treated as a movable single-level quantum dot
Externí odkaz:
http://arxiv.org/abs/2112.00210
We predict and analyze mechanical instability and corresponding self-sustained mechanical oscillations occurring in a nanoelectromechanical system composed of a metallic carbon nanotube (CNT) suspended between two superconducting leads and coupled to
Externí odkaz:
http://arxiv.org/abs/2009.02679
Publikováno v:
Phys. Rev. B 100, 235413 (2019)
We consider a model describing a spin field-effect transistor based on a quantum nanowire with a tunable spin-orbit interaction embedded between two ferromagnetic leads with anticollinear magnetization. We investigate a regime of a strong interplay b
Externí odkaz:
http://arxiv.org/abs/1909.04524
Publikováno v:
Phys. Rev. B 100, 115406 (2019)
An unbiased one-dimensional weak link between two terminals, subjected to the Rashba spin-orbit interaction caused by an AC electric field which rotates periodically in the plane perpendicular to the link, is shown to inject spin-polarized electrons
Externí odkaz:
http://arxiv.org/abs/1903.03321
A theory of a thermally induced single-electron "shuttling" instability in a magnetic nanomechanical device subject to an external magnetic field is presented in the Coulomb blockade regime of electron transport. The model magnetic shuttle device con
Externí odkaz:
http://arxiv.org/abs/1806.00633