scholarly journals Out-of-plane magnetic anisotropy engineered via band distortion in two-dimensional materials

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Li Yin ◽  
David S. Parker
2020 ◽  
Vol 22 (1) ◽  
pp. 238-244
Author(s):  
Miaomiao Guo ◽  
Xiaoqing Liang ◽  
Han Wang ◽  
Junfeng Zhang

The magnetic anisotropy energy of Ir2 dimers on germanene with different adsorption sites and areal densities.


2019 ◽  
Vol 99 (1) ◽  
Author(s):  
D. Odkhuu ◽  
T. Tsevelmaa ◽  
P. Taivansaikhan ◽  
N. Park ◽  
S. C. Hong ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17230-17239
Author(s):  
Iqtidar Ahmad ◽  
Ismail Shahid ◽  
Anwar Ali ◽  
Lei Gao ◽  
Jinming Cai

Janus monolayers with breaking out-of-plane structural symmetries and spontaneous electric polarizations offer new possibilities in the field of two-dimensional materials.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Zhemi Xu ◽  
Davide Ferraro ◽  
Annamaria Zaltron ◽  
Nicola Galvanetto ◽  
Alessandro Martucci ◽  
...  

AbstractThe out-of-plane optical constants of monolayer two-dimensional materials have proven to be experimentally elusive. Owing to their reduced dimensionality, optical measurements have limited sensitivity to these properties which are hidden by the optical response of the substrate. Therefore, there remains an absence of scientific consensus on how to correctly model these crystals. Here we perform an experiment on the optical response of a single-layer two-dimensional crystal that addresses these problems. We successfully remove the substrate contribution to its optical response by a step deposition of a monolayer crystal inside a thick polydimethylsiloxane prism. This allows for a reliable determination of both the in-plane and the out-of-plane components of its surface susceptibility tensor. Our results prescribe one clear theoretical model for these crystals. This precise characterization of their optical properties will be relevant to future progresses in photonics and optoelectronics with two-dimensional materials.


Nanophotonics ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Xuezhi Ma ◽  
Nathan Youngblood ◽  
Xiaoze Liu ◽  
Yan Cheng ◽  
Preston Cunha ◽  
...  

AbstractA fascinating photonic platform with a small device scale, fast operating speed, as well as low energy consumption is two-dimensional (2D) materials, thanks to their in-plane crystalline structures and out-of-plane quantum confinement. The key to further advancement in this research field is the ability to modify the optical properties of the 2D materials. The modifications typically come from the materials themselves, for example, altering their chemical compositions. This article reviews a comparably less explored but promising means, through engineering the photonic surroundings. Rather than modifying materials themselves, this means manipulates the dielectric and metallic environments, both uniform and nanostructured, that directly interact with the materials. For 2D materials that are only one or a few atoms thick, the interaction with the environment can be remarkably efficient. This review summarizes the three degrees of freedom of this interaction: weak coupling, strong coupling, and multifunctionality. In addition, it reviews a relatively timing concept of engineering that directly applied to the 2D materials by patterning. Benefiting from the burgeoning development of nanophotonics, the engineering of photonic environments provides a versatile and creative methodology of reshaping light–matter interaction in 2D materials.


2021 ◽  
Author(s):  
Michele Merano ◽  
Zhemi Xu ◽  
Davide Ferraro ◽  
Annamaria Zaltron ◽  
Nicola Galvanetto ◽  
...  

Abstract The out-of-plane optical constants of two-dimensional materials have proven to be experimentally elusive. Owing to the reduced dimensionality of a monolayer, optical measurements have limited sensitivity to these properties, which are hidden by the optical response of the substrate. Therefore, there remains an absence of scientific consensus on how to correctly model these materials. Theoretical descriptions span from isotropic three-dimensional slabs to two-dimensional surface currents with a null out-of-plane surface susceptibility. Here we perform a smoking gun experiment on the optical response of a single-layer two-dimensional crystal that addresses these problems. We successfully remove the substrate contribution to the optical response of these materials by a step deposition of a monolayer crystal inside a thick polydimethylsiloxane prism. This allows for a reliable determination of both the in-plane and the out-of-plane components of the monolayer surface susceptibility tensor. Our results prescribe one clear theoretical model for these types of material. This work creates opportunities for a precise characterization of the optical properties of two-dimensional crystals in all the optical domains such as the nonlinear response, surface wave phenomena or magneto-optical Kerr effect. Our assay will be relevant to future progresses in photonics and optoelectronics with 2D materials.


2020 ◽  
Vol 101 (12) ◽  
Author(s):  
J. Z. Zhao ◽  
L. C. Chen ◽  
B. Xu ◽  
B. B. Zheng ◽  
J. Fan ◽  
...  

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