Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Tadić, Milan Ž."'
We investigate the electron states in double asymmetric $\rm{HgTe/Cd_{x}Hg_{1-x}Te}$ quantum wells grown along the $[001]$ direction. The subbands are computed by means of the envelope function approximation applied to the 8-band Kane $\bf{k}\cdot\bf
Externí odkaz:
http://arxiv.org/abs/2008.00521
Publikováno v:
Phys. Rev. B 100, 125304 (2019)
We investigate the electron states and optical absorption in square- and hexagonal-shaped two-dimensional (2D) HgTe quantum dots and quantum rings in the presence of a perpendicular magnetic field. The electronic structure is modeled by means of the
Externí odkaz:
http://arxiv.org/abs/1909.08918
Publikováno v:
J. Phys.: Condens. Matter 30, 035301 (2018)
Due to nonzero intrinsic spin-orbit interaction in buckled honeycomb crystal structures, silicene and germanene exhibit interesting topological properties, and are therefore candidates for the realization of the quantum spin Hall effect. We employ th
Externí odkaz:
http://arxiv.org/abs/1707.09179
Autor:
Arsoski, Vladimir V., Grujic, Marko M., Cukaric, Nemanja A., Tadic, Milan Z., Peeters, Francois M.
Publikováno v:
Phys. Rev. B 96, 125434 (2017)
The energy spectrum and eigenstates of single-layer black phosphorous nanoribbons in the presence of perpendicular magnetic field and in-plane transverse electric field are investigated by means of a tight-binding method and the effect of different t
Externí odkaz:
http://arxiv.org/abs/1704.02944
Publikováno v:
Phys. Rev. B 93, 245413 (2016)
We propose a new type of edges, arising due to the anisotropy inherent in the puckered structure of a honeycomb system such as in phosphorene. Skewed-zigzag and skewed-armchair nanoribbons are semiconducting and metallic, respectively, in contrast to
Externí odkaz:
http://arxiv.org/abs/1512.02030
Publikováno v:
Phys. Rev. B 91, 245432 (2015)
The angular momentum quantization of chiral gapless modes confined to a circularly shaped interface between two different topological phases is investigated. By examining several different setups, we show analytically that the angular momentum of the
Externí odkaz:
http://arxiv.org/abs/1502.07476
Publikováno v:
Phys. Rev. B 90, 205408 (2014)
In honeycomb Dirac systems with broken inversion symmetry, orbital magnetic moments coupled to the valley degree of freedom arise due to the topology of the band structure, leading to valley-selective optical dichroism. On the other hand, in Dirac sy
Externí odkaz:
http://arxiv.org/abs/1408.1200
Publikováno v:
Phys. Rev. Lett. 113, 046601 (2014)
The interplay of massive electrons with spin-orbit coupling in bulk graphene results in a spin-valley dependent gap. Thus, a barrier with such properties can act as a filter, transmitting only opposite spins from opposite valleys. In this Letter we s
Externí odkaz:
http://arxiv.org/abs/1406.5443
We modeled the electron and hole states in Si/SiO2 quantum wells within a basis of standing waves using the 30-band k.p theory. The hard-wall confinement potential is assumed, and the influence of the peculiar band structure of bulk silicon on the qu
Externí odkaz:
http://arxiv.org/abs/1311.4311
Neutral excitons in strained axially symmetric In(Ga)As/GaAs quantum dots with ringlike shape are investigated. Similar to experimental self-assembled quantum rings, the analyzed quantum dots have volcano-like shapes. The continuum mechanical model i
Externí odkaz:
http://arxiv.org/abs/1302.5123