scholarly journals Electrically switchable valley polarization, spin/valley filter, and valve effects in transition-metal dichalcogenide monolayers interfaced with two-dimensional ferromagnetic semiconductors

2021 ◽  
Vol 104 (20) ◽  
Author(s):  
Ao Zhang ◽  
Kaike Yang ◽  
Yun Zhang ◽  
Anlian Pan ◽  
Mingxing Chen
Keyword(s):  
Transition Metal ◽  
Ferromagnetic Semiconductors ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional ◽  
Valley Polarization

scholarly journals Layer-engineered interlayer excitons

2021 ◽  
Vol 7 (30) ◽  
pp. eabh0863
Author(s):  
Qinghai Tan ◽  
Abdullah Rasmita ◽  
Si Li ◽  
Sheng Liu ◽  
Zumeng Huang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Band Structure ◽  
Optoelectronic Property ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional ◽  
Multilayer Heterostructures ◽  
Valley Polarization ◽  
Band Transition ◽  
The Way

Photoluminescence (PL) from excitons serves as a powerful tool to characterize the optoelectronic property and band structure of semiconductors, especially for atomically thin two-dimensional transition metal dichalcogenide (TMD) materials. However, PL quenches quickly when the thickness of TMD materials increases from monolayer to a few layers, due to the change from direct to indirect band transition. Here, we show that PL can be recovered by engineering multilayer heterostructures, with the band transition reserved to be a direct type. We report emission from layer-engineered interlayer excitons from these multilayer heterostructures. Moreover, as desired for valleytronics devices, the lifetime, valley polarization, and valley lifetime of the generated interlayer excitons can all be substantially improved as compared with that in the monolayer-monolayer heterostructure. Our results pave the way for controlling the properties of interlayer excitons by layer engineering.

scholarly journals Visualization of Multifractal Superconductivity in a Two-Dimensional Transition Metal Dichalcogenide in the Weak-Disorder Regime

Nano Letters ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 5111-5118 ◽  
Author(s):  
Carmen Rubio-Verdú ◽  
Antonio M. Garcı́a-Garcı́a ◽  
Hyejin Ryu ◽  
Deung-Jang Choi ◽  
Javier Zaldı́var ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional ◽  
Weak Disorder

scholarly journals Retraction: Physics of excitons and their transport in two dimensional transition metal dichalcogenide semiconductors

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12866-12866
Author(s):  
Bhaskar Kaviraj ◽  
Dhirendra Sahoo
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional

Retraction of ‘Physics of excitons and their transport in two dimensional transition metal dichalcogenide semiconductors’ by Bhaskar Kaviraj and Dhirendra Sahoo, RSC Adv., 2019, 9, 25439–25461, DOI: 10.1039/c9ra03769a.

scholarly journals Fast response photogating in monolayer MoS2 phototransistors

Nanoscale ◽  
2021 ◽  
Author(s):  
Daniel Vaquero ◽  
Vito Clericò ◽  
Juan Salvador-Sanchez ◽  
Elena Díaz ◽  
Francisco Dominguez-Adame ◽  
...  
Keyword(s):  
Transition Metal ◽  
Fast Response ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional ◽  
Monolayer Mos2 ◽  
Intensive Research

Two-dimensional transition metal dichalcogenide (TMD) phototransistors have been object of intensive research during the last years due to their potential for photodetection. Photoresponse in these devices is typically caused by...

Negative Valley Polarization in Doped Monolayer MoSe2

2021 ◽  
Author(s):  
Yueh-Chun Wu ◽  
Takashi Taniguchi ◽  
Kenji Watanabe ◽  
Jun Yan
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenide ◽  
Optical Generation ◽  
Valley Polarization

Monolayer molybdenum di-selenide (1L-MoSe2) stands out in the transition metal dichalcogenide family of materials as an outlier where optical generation of valley polarization is inefficient. Here we show that using...

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