Efficient valley polarization of charged excitons and resident carriers in Molybdenum disulfide monolayers by optical pumping

Autor: Sangjun Park, Steve Arscott, Takashi Taniguchi, Kenji Watanabe, Fausto Sirotti, Fabian Cadiz

Publikováno v: Communications Physics, Vol 5, Iss 1, Pp 1-8 (2022)

Monolayer transition metal dichalcogenides, due to a lack of inversion symmetry and strong spin orbit coupling, exhibit a number of unique features applicable to optical devices. Here, the authors use polarised microphotoluminescence to demonstrate o

Externí odkaz: https://doaj.org/article/772c0d9474d3492c9e69778ff90c8ec1

Le spin des électrons se transporte-t-il comme leur charge ?

Autor: D. Paget, Fabian Cadiz, Alistair Rowe

Publikováno v: Reflets de la physique. :6-11

Pour répondre aux besoins croissants de la microélectronique, il a été proposé de transmettre l’information par le spin de l’électron, cette variable quantique dont l’analogue classique est la rotation sur lui-même. Il serait naturel de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85d4e69712afd65f6fd3928d62dfd730
https://doi.org/10.1051/refdp/202065006

Spin/valley pumping of resident electrons in WSe2 and WS2 monolayers

Autor: Hanan Dery, Thierry Amand, Lei Ren, Takashi Taniguchi, Daniel Paget, Xavier Marie, Fausto Sirotti, Dinh Van Tuan, Bernhard Urbaszek, Alistair Rowe, Sangjun Park, Min Yang, Kenji Watanabe, Laurent Lombez, Hans Tornatzky, Fabian Cadiz, Cedric Robert

Publikováno v: Nature Communications
Nature Communications, 2021, 12 (1), ⟨10.1038/s41467-021-25747-5⟩
Nature Communications, Nature Publishing Group, 2021, 12 (1), ⟨10.1038/s41467-021-25747-5⟩
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)

Monolayers of transition metal dichalcogenides are ideal materials to control both spin and valley degrees of freedom either electrically or optically. Nevertheless, optical excitation mostly generates excitons species with inherently short lifetime

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79e4e319e54af72eb98111b741a6e782
https://hal.science/hal-03410584/document

Charge and spin transport over record distances in GaAs metallic n -type nanowires

Autor: Yamina André, Hadi Hijazi, Daniel Paget, Joël Leymarie, Christine Robert-Goumet, Gabin Grégoire, Fabian Cadiz, Guillaume Monier, Evelyne Gil

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2021, 103 (19), ⟨10.1103/PhysRevB.103.195314⟩
Physical Review B, 2021, 103 (19), ⟨10.1103/PhysRevB.103.195314⟩

International audience; We have investigated charge and spin transport in n-type metallic GaAs nanowires (≈ 10 17 cm −3 doping level), grown by hydride vapor phase epitaxy (HVPE) on Si substrates. For this doping level, charge and spin transport

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5837cb52205792e1fabc2a5b2e427b82
https://hal.archives-ouvertes.fr/hal-03430142/document

Electrical Initialization of Electron and Nuclear Spins in a Single Quantum Dot at Zero Magnetic Field

Autor: Xavier Marie, Mathieu Stoffel, Bernhard Urbaszek, Zhanguo Wang, Xiufeng Han, Xavier Devaux, Andrea Balocchi, Hélène Carrère, Pierre Renucci, Jean-Marie George, Yuan Lu, Delphine Lagarde, Stéphane Mangin, Abdelhak Djeffal, Shiheng Liang, Bo Xu, Bingshan Tao, Thierry Amand, Fabian Cadiz, Henri Jaffrès, Michel Hehn

Publikováno v: Nano Letters
Nano Letters, American Chemical Society, 2018, 18 (4), pp.2381-2386. ⟨10.1021/acs.nanolett.7b05351⟩
Nano Letters, 2018, 18 (4), pp.2381-2386. ⟨10.1021/acs.nanolett.7b05351⟩

The emission of circularly polarized light from a single quantum dot relies on the injection of carriers with well-defined spin polarization. Here we demonstrate single dot electroluminescence (EL) with a circular polarization degree up to 35% at zer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f28318edd9078fbbbfb8357bf626f892
https://doi.org/10.1021/acs.nanolett.7b05351