Zobrazeno 1 - 10
of 157
pro vyhledávání: '"Sitek, Anna"'
Autor:
Heris, Hadi Rezaie, Klausen, Kristjan Ottar, Sitek, Anna, Erlingsson, Sigurdur Ingi, Manolescu, Andrei
We calculate the charge and heat currents carried by electrons, originating from a temperature gradient and a chemical potential difference between the two ends of tubular nanowires with different geometries of the cross-sectional areas: circular, sq
Externí odkaz:
http://arxiv.org/abs/2302.02164
Autor:
Heris, Hadi Rezaie, Klausen, Kristjan Ottar, Sitek, Anna, Erlingsson, Sigurdur Ingi, Manolescu, Andrei
We calculate electronic charge and heat transport in tubular nanowires generated by a temperature gradient or a chemical potential bias. These nanowires correspond to semiconductor core-shell nanowires with insulating (undoped) core and conductive (d
Externí odkaz:
http://arxiv.org/abs/2302.01742
Publikováno v:
Nanotechnology 34(34), p. 345001 (2023)
Flux-periodic oscillations of the superconducting gap in proximitized core-shell nanowires are explored. Periodicity of oscillations in the energy spectrum of a cylindrical nanowire is compared with nanowires having hexagonal and square cross-section
Externí odkaz:
http://arxiv.org/abs/2209.13076
Publikováno v:
Phys. Rev. B 107(3), p. 35423 (2023)
By solving the Bogoliubov-de Gennes Hamiltonian, the electron-hole coherence within a partially proximitized n-doped semiconductor shell of a core-shell nanowire heterostructure is investigated numerically and compared with the Andreev reflection int
Externí odkaz:
http://arxiv.org/abs/2206.04830
Publikováno v:
Phys. Rev. Applied 16, 034043 (2021)
We perform a computational study, based on the molecular dynamics method, of the shape of Miram curves obtained from microscale planar diodes. We discuss the smooth transition from the source-limited to space-charge-limited regime due to the finite s
Externí odkaz:
http://arxiv.org/abs/2106.05311
We investigate by molecular dynamics simulations [arXiv:1412.4537 [physics.plasm-ph], arXiv:1608.06789 [physics.plasm-ph]] a beam of electrons released via field emission from a planar cathode surface of 1 ${\rm \mu m}^2$ with an inhomogeneous two-le
Externí odkaz:
http://arxiv.org/abs/2011.13731
Publikováno v:
Phys. Rev. Applied 15, 014040 (2021)
We use computational simulations to study the electron emission and propagation in planar vacuum diodes. We show how space-charge affects thermionic emission from cathodes with two different values of work function that form a checkerboard pattern of
Externí odkaz:
http://arxiv.org/abs/2009.13616
The effects of geometry on the hosting of Majorana zero modes are explored in core-shell nanowires with a hexagonal core and a triangular shell, and vice versa. The energy interval separating electronic states localized in the corners from states loc
Externí odkaz:
http://arxiv.org/abs/2004.14991
Electromagnetic field emitted by core-shell semiconductor nanowires driven by an alternating current
Autor:
Torres, Miguel Urbaneja, Klausen, Kristjan Ottar, Sitek, Anna, Erlingsson, Sigurdur I., Gudmundsson, Vidar, Manolescu, Andrei
Publikováno v:
J. Appl. Phys. 130, 034301 (2021)
We consider tubular nanowires with a polygonal cross-section. In this geometry the lowest energy states are separated in two sets, one of corner and one of side-localized states, respectively. The presence of an external magnetic field transverse to
Externí odkaz:
http://arxiv.org/abs/1912.10284
We discuss the low energy electronic states in hexagonal rings. These states correspond to the transverse modes in core-shell nanowires built of III-V semiconductors which typically have a hexagonal cross section. In the case of symmetric structures
Externí odkaz:
http://arxiv.org/abs/1907.06764