Journal
NATURE COMMUNICATIONS
Volume 10, Issue -, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-019-11697-6
Keywords
-
Categories
Funding
- JSPS fellowship [16J10537]
- JST CREST [JPMJCR16F3]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [JP18H01832]
- [26247052]
- [17H06124]
- Grants-in-Aid for Scientific Research [16J10537] Funding Source: KAKEN
Ask authors/readers for more resources
High-harmonic generation in solids is a unique tool to investigate the electron dynamics in strong light fields. The systematic study in monolayer materials is required to deepen the insight into the fundamental mechanism of high-harmonic generation. Here we demonstrated nonperturbative high harmonics up to 18th order in monolayer transition metal dichalcogenides. We found the enhancement in the even-order high harmonics which is attributed to the resonance to the band nesting energy. The symmetry analysis shows that the valley polarization and anisotropic band structure lead to polarization of the high-harmonic radiation. The calculation based on the three-step model in solids revealed that the electron-hole polarization driven to the band nesting region should contribute to the high harmonic radiation, where the electrons and holes generated at neighboring lattice sites are taken into account. Our findings open the way for attosecond science with monolayer materials having widely tunable electronic structures.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available