Theoretical study of the bandgap regulation of a two-dimensional GeSn alloy under biaxial strain and uniaxial strain along the armchair direction

2018 ◽  
Vol 20 (36) ◽  
pp. 23344-23351
Author(s):  
Wenqi Huang ◽  
Hong Yang ◽  
Buwen Cheng ◽  
Chunlai Xue
Keyword(s):  
Theoretical Study ◽  
Uniaxial Strain ◽  
Two Dimensional ◽  
Biaxial Strain ◽  
Gesn Alloy ◽  
Armchair Direction ◽  
External Strain

The combination of alloying Sn and applying an external strain is an efficient way to tune the bandgap of a two-dimensional GeSn alloy.

scholarly journals A First-Principle Study of Monolayer Transition Metal Carbon Trichalcogenides

2021 ◽  
Author(s):  
Muhammad Yar Khan ◽  
Yan Liu ◽  
Tao Wang ◽  
Hu Long ◽  
Miaogen Chen ◽  
...  
Keyword(s):  
Phonon Dispersion ◽  
Magnetic Ordering ◽  
Dimensional Structure ◽  
First Principle ◽  
Two Dimensional ◽  
Biaxial Strain ◽  
Half Metallic ◽  
First Principle Calculations ◽  
Potential Applications ◽  
External Strain

AbstractMonolayer MnCX3 metal–carbon trichalcogenides have been investigated by using the first-principle calculations. The compounds show half-metallic ferromagnetic characters. Our results reveal that their electronic and magnetic properties can be altered by applying uniaxial or biaxial strain. By tuning the strength of the external strain, the electronic bandgap and magnetic ordering of the compounds change and result in a phase transition from the half-metallic to the semiconducting phase. Furthermore, the vibrational and thermodynamic stability of the two-dimensional structure has been verified by calculating the phonon dispersion and molecular dynamics. Our study paves guidance for the potential applications of these two mono-layers in the future for spintronics and straintronics devices.

Biaxial strain, electric field and interlayer distance-tailored electronic structure and magnetic properties of two-dimensional g-C3N4/Li-adsorbed Cr2Ge2Te6 van der Waals heterostructures

2021 ◽  
Vol 23 (10) ◽  
pp. 6171-6181
Author(s):  
Yaoqi Gao ◽  
Baozeng Zhou ◽  
Xiaocha Wang
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
Electric Field ◽  
Van Der Waals ◽  
Interlayer Distance ◽  
Two Dimensional ◽  
Biaxial Strain ◽  
Van Der Waals Heterostructures

It is found that the biaxial strain, electric field and interlayer distance can effectively modulate the electronic structure and magnetic properties of two-dimensional van der Waals heterostructures.

Theoretical study of tunable magnetism of two-dimensional MnSe2 through strain, charge, and defect

2021 ◽  
Vol 33 (21) ◽  
pp. 215803
Author(s):  
Wen-Qiang Xie ◽  
Zhi-Wei Lu ◽  
Chang-Chun He ◽  
Xiao-Bao Yang ◽  
Yu-Jun Zhao
Keyword(s):  
Theoretical Study ◽  
Two Dimensional
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