Electrically Tunable and Dramatically Enhanced Valley-Polarized Emission of Monolayer WS2 at Room Temperature with Plasmonic Archimedes Spiral Nanostructures.
Sign Up to like & getrecommendations! Published in 2021 at "Advanced materials"
DOI: 10.1002/adma.202104863
Abstract: Monolayer transition metal dichalcogenides (TMDs) have intrinsic valley degrees of freedom, making them appealing for exploiting valleytronic applications in information storage and processing. WS2 monolayer possesses two inequivalent valleys in the Brillouin zone, each valley… read more here.
Keywords: monolayer; valley polarized; monolayer ws2; valley ... See more keywords
Valley polarized transport in graphene cross-junctions
Sign Up to like & getrecommendations! Published in 2020 at "Superlattices and Microstructures"
DOI: 10.1016/j.spmi.2020.106647
Abstract: Abstract Valley polarized transport was studied in graphene cross junctions consisting of a bilayer graphene device region connected to 4 monolayer graphene leads. Electrons injected from the armchair leads to the zigzag leads can be… read more here.
Keywords: cross junctions; valley polarized; graphene; valley polarization ... See more keywords
Valley-Polarized Topological Phases with In-Plane Magnetization.
Sign Up to like & getrecommendations! Published in 2024 at "Nano letters"
DOI: 10.1021/acs.nanolett.4c03252
Abstract: The coexistence of valley polarization and topology has considerably facilitated the applications of 2D materials toward valleytronics device technology. However, isolated and distinct valleys are required to observe the valley-related quantum phenomenon. Herein, we report… read more here.
Keywords: valley; polarized topological; valley polarized; plane magnetization ... See more keywords
Tunable spin-valley polarized transport channel in silicene-based superconducting hybrid structures
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Applied Physics"
DOI: 10.1063/5.0035909
Abstract: We investigate the influence of spin-valley polarized transport channel (SVPTC) mismatch modulated by the perpendicular electric field and the exchange field in a silicene-based ferromagnet/ferromagnet/superconductor junction and the barrier strength in a ferromagnet/insulator/ferromagnet/superconductor junction. In… read more here.
Keywords: spin valley; transport channel; field; valley polarized ... See more keywords
Valley-polarized edge plasmons in graphene p–n junctions with pseudomagnetic fields
Sign Up to like & getrecommendations! Published in 2024 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ad762f
Abstract: Owing to the inherent characteristics of collective excitations in graphene, electrical control of edge plasmons is highly desirable for nanoplasmonic applications. This study investigates valley-polarized edge pseudomagnetoplasmons in a graphene p–n junction subjected to a… read more here.
Keywords: graphene junctions; edge; plasmons graphene; edge plasmons ... See more keywords
Recent advances of defect-induced spin and valley polarized states in graphene
Sign Up to like & getrecommendations! Published in 2022 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac70c4
Abstract: Electrons in graphene have fourfold spin and valley degeneracies owing to the unique bipartite honeycomb lattice and an extremely weak spin-orbit coupling, which can support a series of broken symmetry states. Atomic-scale defects in graphene… read more here.
Keywords: valley polarized; spin; spin valley; polarized states ... See more keywords
Topological superconductivity, ferromagnetism, and valley-polarized phases in moiré systems: Renormalization group analysis for twisted double bilayer graphene
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.085103
Abstract: Recent experiments have observed possible spin- and valley-polarized insulators and spin-triplet superconductivity in twisted double bilayer graphene, a moire structure consisting of a pair of Bernal-stacked bilayer graphene. Besides the continuously tunable band widths controlled… read more here.
Keywords: valley polarized; twisted double; bilayer graphene; valley ... See more keywords
Electric field controlled valley-polarized photocurrent switch based on the circular bulk photovoltaic effect
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.109.235403
Abstract: Efficient electric manipulation of valley degrees of freedom is critical and challenging for the advancement of valley-based information science and technology. We put forth an electrical scheme, based on a two-band Dirac model, that can… read more here.
Keywords: circular bulk; effect; polarized photocurrent; valley polarized ... See more keywords
Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses
Sign Up to like & getrecommendations! Published in 2023 at "Nanomaterials"
DOI: 10.3390/nano13071207
Abstract: We report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe2 using transient reflection spectroscopy with few-cycle laser pulses with 7 fs duration. We observe that at room temperature, the… read more here.
Keywords: polarized excitons; ultrafast dynamics; valley polarized; dynamics valley ... See more keywords