Observing Deformation‐Induced Backscattering in Flexible Valley‐Hall Topological Metasurfaces
Sign Up to like & getrecommendations! Published in 2024 at "Advanced Optical Materials"
DOI: 10.1002/adom.202402078
Abstract: Topological metasurfaces based on the quantum valley Hall effect have garnered attention for their ability to enable novel physical phenomena. However, the propagation characteristics of flexible topological metasurfaces under bending and folding remain underexplored, leaving… read more here.
Keywords: topological metasurfaces; passband; valley hall; deformation ... See more keywords
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 photonic crystal waveguides under non-Hermitian active defect
Sign Up to like & getrecommendations! Published in 2024 at "Applied Physics Letters"
DOI: 10.1063/5.0213641
Abstract: Photonic transport facilitated by topological protection is a proposed advantage of photonic topological waveguides based on valley photonic crystals (VPCs). Although topological protection significantly suppresses backscattering in these waveguides, it is often desirable to achieve… read more here.
Keywords: defect; vpc waveguide; valley hall; hall photonic ... See more keywords
Anomalous valley Hall effect in two-dimensional p-orbital honeycomb lattice
Sign Up to like & getrecommendations! Published in 2025 at "Applied Physics Letters"
DOI: 10.1063/5.0277376
Abstract: Anomalous valley Hall effect (AVHE) in two-dimensional materials represents a cornerstone phenomenon in condensed matter physics. While substantial research efforts have been predominantly concentrated on d-orbital systems, its realization in p-orbital platforms is rarely investigated.… read more here.
Keywords: dimensional orbital; valley hall; valley; two dimensional ... 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;
Renormalization of the valley Hall conductivity due to interparticle interaction
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.110.l041301
Abstract: We develop a theory of Coulomb interaction-mediated contribution to valley Hall effect (VHE) in two-dimensional non-centrosymmetric gapped Dirac materials. We assume that the bare valley Hall current occurs in the system due to the presence… read more here.
Keywords: electron hole; valley hall; electron; interaction ... See more keywords