Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Amand, Thierry"'
Autor:
Marie, Xavier, Lagarde, Delphine, Balocchi, Andrea, Robert, Cedric, Lombez, Laurent, Renucci, Pierre, Amand, Thierry, Cadiz, Fabian
Despite decades of research, demonstration of all-optical detection and control of free electron spins in silicon remains elusive. Here, we directly probe the electron spin properties in bulk silicon by measuring the polarization of luminescence foll
Externí odkaz:
http://arxiv.org/abs/2407.18742
Publikováno v:
Physical Review B 107, 115206 (2023)
We propose a quantum approach to "electron-hole exchange", better named electron-hole pair exchange, that makes use of the second quantization formalism to describe the problem in terms of Bloch-state electron operators. This approach renders transpa
Externí odkaz:
http://arxiv.org/abs/2308.09410
Autor:
Paradisanos, Ioannis, Raven, Andres Manuel Saiz, Amand, Thierry, Robert, Cedric, Renucci, Pierre, Watanabe, Kenji, Taniguchi, Takashi, Gerber, Iann C., Marie, Xavier, Urbaszek, Bernhard
Publikováno v:
Physical Review B 105, 115420 (2022)
The twist angle in transition metal dichalcogenide (TMD) heterobilayers is a compelling degree of freedom that determines electron correlations and the period of lateral confinement of moir\'e excitons. Here we perform polarization-resolved second ha
Externí odkaz:
http://arxiv.org/abs/2110.08095
Autor:
Robert, Cedric, Park, Sangjun, Cadiz, Fabian, Lombez, Laurent, Ren, Lei, Tornatzky, Hans, Rowe, Alistair, Paget, Daniel, Sirotti, Fausto, Yang, Min, Van Tuan, Dinh, Taniguchi, Takashi, Urbaszek, Bernhard, Watanabe, Kenji, Amand, Thierry, Dery, Hanan, Marie, Xavier
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:
http://arxiv.org/abs/2105.04861
Measurement of Conduction and Valence Bands g-factors in a Transition Metal Dichalcogenide Monolayer
Autor:
Robert, Cedric, Dery, Hanan, Ren, Lei, van Tuan, Dinh, Courtade, Emmanuel, Yang, Min, Urbaszek, Bernhard, Lagarde, Delphine, Watanabe, Kenji, Taniguchi, Takashi, Amand, Thierry, Marie, Xavier
Publikováno v:
Phys. Rev. Lett. 126, 067403 (2021)
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 sep
Externí odkaz:
http://arxiv.org/abs/2008.07464
Autor:
Cadiz, Fabian, Lagarde, Delphine, Tao, Bingshan, Frougier, Julien, Xu, Bo, Jaffrès, Henri, Wang, Zhanguo, Han, Xiufeng, George, Jean Marie, Carrere, Hélène, Balocchi, Andrea, Amand, Thierry, Marie, Xavier, Urbaszek, Bernhard, Lu, Yuan, Renucci, Pierre
Publikováno v:
Phys. Rev. Materials 4, 124603 (2020)
Photon helicity-dependent photocurrent is measured at zero magnetic field on a device based on an ensemble of InGaAs/GaAs quantum dots that are embedded into a GaAs-based p-i-n diode. Our main goal is to take advantage of the long electron spin relax
Externí odkaz:
http://arxiv.org/abs/2007.12054
Strain in two-dimensional (2D) transition metal dichalcogenide (TMD) has led to localized states with exciting optical properties, in particular in view of designing one photon sources. The naturally formed of the MoS2 monolayer deposed on hBN substr
Externí odkaz:
http://arxiv.org/abs/2005.03166
Publikováno v:
Phys. Rev. B 98, 205430 (2018)
Disorder derived from defects or strain in monolayer TMDs can lead to a dramatic change in the physical behavior of the interband excitations, producing inhomogeneous spectral broadening and localization; leading to radiative lifetime increase. In th
Externí odkaz:
http://arxiv.org/abs/1803.05140
Autor:
De Cesari, Sebastiano, Balocchi, Andrea, Vitiello, Elisa, Jahandar, Pedram, Grilli, Emanuele, Amand, Thierry, Marie, Xavier, Myronov, Maksym, Pezzoli, Fabio
Publikováno v:
Phys. Rev. B 99, 035202 (2019)
Germanium-Tin is emerging as a material exhibiting excellent photonic properties. Here we demonstrate optical initialization and readout of spins in this intriguing group IV semiconductor alloy and report on spin quantum beats between Zeeman-split le
Externí odkaz:
http://arxiv.org/abs/1710.05792
Autor:
Robert, Cedric, Amand, Thierry, Cadiz, Fabian, Lagarde, Delphine, Courtade, Emmanuel, Manca, Marco, Taniguchi, Takashi, Watanabe, Kenji, Urbaszek, Bernhard, Marie, Xavier
Publikováno v:
Phys. Rev. B 96, 155423 (2017)
The intricate interplay between optically dark and bright excitons governs the light-matter interaction in transition metal dichalcogenide monolayers. We have performed a detailed investigation of the "spin-forbidden" dark excitons in WSe2 monolayers
Externí odkaz:
http://arxiv.org/abs/1708.05398