.png){kind=icon}
Return
High-harmonic generation from an atomically thin semiconductor
.png){kind=icon}
PRE
AI
DOI：10.1038/NPHYS3946.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
High-harmonic generation (HHG) in bulk solids permits the exploration of materials in a new regime of strong fields and attosecond timescales(1-6). The generation process has been discussed in the context of strongly driven electron dynamics in single-particle bands(7-14). Two-dimensional materials exhibit distinctive electronic properties compared to the bulk that could significantly modify the HHG process(15,16), including different symmetries(17-19), access to individual valleys(20,21) and enhanced many-body interactions(22-25). Here we demonstrate non-perturbative HHG from a monolayer MoS2 crystal, with even and odd harmonics extending to the 13th order. The even orders are predominantly polarized perpendicular to the pump and are compatible with the anomalous transverse intraband current arising from the material's Berry curvature, while the weak parallel component suggests the importance of interband transitions. The odd harmonics exhibit a significant enhancement in effciency per layer compared to the bulk, which is attributed to correlation effects. The combination of strong many-body Coulomb interactions and widely tunable electronic properties in two-dimensionalmaterialsoffers a new platform for attosecond physics.
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
18.4
Papers:
6.7K
Citations:
5.7W
Organization
Cited Papers
ShareSaveShareSaveProbing Symmetry Properties of Few-Layer MoS2 and h-BN by Optical Second-Harmonic Generation.png)
NANO LETTERS
NANO LETTERSIF9.1
PREAI
ShareSaveObservation of intense second harmonic generation from MoS2 atomic crystalsPHYSICAL REVIEW B
OAAI
PHYSICAL REVIEW BIF3.7
OAAIShareSaveHigh harmonics generated in semiconductor nanostructures by the coupled dynamics of optical inter- and intraband excitationsPHYSICAL REVIEW B
PHYSICAL REVIEW BIF3.7
PREAI
ShareSaveShareSave
View more