Low-energy bands, optical properties, and spin/valley-Hall conductivity of silicene and germanene
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Science"
DOI: 10.1007/s10853-020-05044-0
Abstract: In this work, we study systematically low-energy bands, optical absorbance and spin/valley-Hall conductivity of silicene and germanene in the presence of a perpendicular electric field. Our analytical calculations indicate that both silicene and germanene are… read more here.
Keywords: spin valley; energy; valley hall; silicene germanene ... See more keywords
Electrical control of the anomalous valley Hall effect in antiferrovalley bilayers
Sign Up to like & getrecommendations! Published in 2017 at "npj Quantum Materials"
DOI: 10.1038/s41535-017-0051-6
Abstract: In analogy to all-electric spintronics, all-electric valleytronics, i.e., valley manipulation via electric means, becomes an exciting new frontier as it may bring revolutions in the field of data storage with ultra-high speed and ultra-low power… read more here.
Keywords: hall; valley hall; hall effect; anomalous valley ... See more keywords
Spin-orbit coupling induced valley Hall effects in transition-metal dichalcogenides
Sign Up to like & getrecommendations! Published in 2019 at "Communications Physics"
DOI: 10.1038/s42005-019-0127-7
Abstract: In transition-metal dichalcogenides, electrons in the K-valleys can experience both Ising and Rashba spin-orbit couplings. In this work, we show that the coexistence of Ising and Rashba spin-orbit couplings leads to a special type of… read more here.
Keywords: transition metal; valley hall; effect; spin orbit ... See more keywords
Optically adjustable valley Hall current in single-layer transition metal dichalcogenides
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5004442
Abstract: The illumination of a single-layer transition metal dichalcogenide with an elliptically polarized light beam is shown to give rise to a differential rate of inter-band carrier excitation between the valence and conduction states around the… read more here.
Keywords: single layer; transition metal; layer transition; valley hall ... See more keywords
Valley Hall In-Plane Edge States as Building Blocks for Elastodynamic Logic Circuits
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.12.044015
Abstract: In this work, we investigate theoretically and demonstrate experimentally the existence of valley-Hall edge states in the in-plane dynamics of honeycomb lattices with bi-valued strut thickness. We exploit these states to achieve non-trivial waveguiding of… read more here.
Keywords: plane; edge states; hall plane; valley hall ... See more keywords
Quantum anomalous valley Hall effect for bosons
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.121405
Abstract: We predict the emergence and quantization of the valley Hall current of indirect excitons residing in a noncentrosymmetric two-dimensional material. This current appears due to the anomalous group velocity of exciton center-of-mass motion with an… read more here.
Keywords: hall effect; valley hall; anomalous valley; quantum anomalous ... See more keywords
Valley Hall effect caused by the phonon and photon drag
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.155302
Abstract: Valley Hall effect is an appearance of the valley current in the direction transverse to the electric current. We develop the microscopic theory of the valley Hall effect in two-dimensional semiconductors where the electrons are… read more here.
Keywords: effect caused; valley hall; hall effect;
Design and experimental observation of valley-Hall edge states in diatomic-graphene-like elastic waveguides
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.174301
Abstract: We report on the design and experimental validation of a two-dimensional phononic elastic waveguide exhibiting topological valley-Hall edge states. The lattice structure of the waveguide is inspired by diatomic graphene, and it is imprinted in… read more here.
Keywords: hall edge; valley hall; edge; edge states ... See more keywords
Control of spin diffusion and suppression of the Hanle oscillation by the coexistence of spin and valley Hall effects in Dirac materials
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.245106
Abstract: In addition to spin, electrons in many materials possess an additional pseudo-spin degree of freedom known as 'valley'. In materials where the spin and valley degrees of freedom are weakly coupled, they can be both… read more here.
Keywords: hall effects; valley; valley hall; spin ... See more keywords
Coherent photogalvanic valley Hall effect
Sign Up to like & getrecommendations! Published in 2017 at "JETP Letters"
DOI: 10.1134/s002136401721007x
Abstract: The theory of the coherent photogalvanic valley Hall effect in two-dimensional systems with the Dirac spectrum of charge carriers is formulated. The study deals with a two-dimensional sample irradiated by two electromagnetic waves, at the… read more here.
Keywords: hall; valley hall; hall effect; effect ... See more keywords
Valley Hall edge solitons in a photonic graphene.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.442338
Abstract: We predict the existence and study properties of the valley Hall edge solitons in a composite photonic graphene with a domain wall between two honeycomb lattices with broken inversion symmetry. Inversion symmetry in our system… read more here.
Keywords: valley hall; edge solitons; hall edge;