Measurement of the spin-forbidden dark excitons in MoS2 and MoSe2 monolayers

Autor: C. Robert, B. Han, P. Kapuscinski, A. Delhomme, C. Faugeras, T. Amand, M. R. Molas, M. Bartos, K. Watanabe, T. Taniguchi, B. Urbaszek, M. Potemski, X. Marie

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)

Excitons control the optical properties of transition metal dichalcogenide monolayers. Here, the authors measure the exciton fine structure of MoS2 and MoSe2 monolayers encapsulated in hBN in magnetic fields up to 30 T, and observe a brightening of t

Externí odkaz: https://doaj.org/article/3784489091cf46cf8b782ef041abca1a

Enabling valley selective exciton scattering in monolayer WSe2 through upconversion

Autor: M. Manca, M. M. Glazov, C. Robert, F. Cadiz, T. Taniguchi, K. Watanabe, E. Courtade, T. Amand, P. Renucci, X. Marie, G. Wang, B. Urbaszek

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Monolayer transition metal dichalcogenides host excitons, bound electron-hole pairs that play a pivotal role in optoelectronic applications relying on strong light-matter interaction. Here, the authors unveil the spectroscopic signature of boson scat

Externí odkaz: https://doaj.org/article/5b8615323f77437c82e8da39aeb1f482

Excitonic Linewidth Approaching the Homogeneous Limit in MoS_{2}-Based van der Waals Heterostructures

Autor: F. Cadiz, E. Courtade, C. Robert, G. Wang, Y. Shen, H. Cai, T. Taniguchi, K. Watanabe, H. Carrere, D. Lagarde, M. Manca, T. Amand, P. Renucci, S. Tongay, X. Marie, B. Urbaszek

Publikováno v: Physical Review X, Vol 7, Iss 2, p 021026 (2017)

The strong light-matter interaction and the valley selective optical selection rules make monolayer (ML) MoS_{2} an exciting 2D material for fundamental physics and optoelectronics applications. But, so far, optical transition linewidths even at low

Externí odkaz: https://doaj.org/article/45bc5bbfd1d949fca67aef7e4b15dcb1

Optical Detection of Long Electron Spin Transport Lengths in a Monolayer Semiconductor

Autor: L. Ren, L. Lombez, C. Robert, D. Beret, D. Lagarde, B. Urbaszek, P. Renucci, T. Taniguchi, K. Watanabe, S. A. Crooker, X. Marie

Publikováno v: Physical Review Letters. 129

Using a spatially-resolved optical pump-probe experiment, we measure the lateral transport of spin/valley polarized electrons over very long distances (tens of micrometers) in a single WSe2 monolayer. By locally pumping the Fermi sea of 2D electrons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb59d932a74216ead75f7a3e44d2064d
https://doi.org/10.1103/physrevlett.129.027402

Measurement of Conduction and Valence Bands g -Factors in a Transition Metal Dichalcogenide Monolayer

Autor: Mingming Yang, B. Urbaszek, T. Taniguchi, Thierry Amand, Hanan Dery, Xavier Marie, Lei Ren, D. van Tuan, D. Lagarde, Cedric Robert, Kenji Watanabe, E. Courtade

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2021, 126 (6), ⟨10.1103/PhysRevLett.126.067403⟩
Physical Review Letters, 2021, 126 (6), ⟨10.1103/PhysRevLett.126.067403⟩

The electron valley and spin degree of freedom in monolayer transition-metal dichalcogenides can be manipulated in optical and transport measurements performed in magnetic fields. The key parameter for determining the Zeeman splitting, namely, the se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b51948c8eff606d4de1f95d9c96327f3
https://hal.archives-ouvertes.fr/hal-03451822