scholarly journals Strong enhancement of spin–orbit splitting induced by σ–π coupling in Pb-decorated silicene

RSC Advances ◽  
2017 ◽  
Vol 7 (19) ◽  
pp. 11761-11767 ◽  
Author(s):  
Tongwei Li ◽  
Xiangying Su ◽  
Haisheng Li ◽  
Weiwei Ju
Keyword(s):  
Electronic Properties ◽  
First Principles ◽  
Spin Orbit ◽  
First Principles Calculations ◽  
Orbit Splitting ◽  
Strong Enhancement ◽  
Spin Orbit Splitting

Electronic properties and spin–orbit (SO) splitting of silicene adsorbed with Cu, Ag, Au and Pb atoms at different coverages are investigated by means of first-principles calculations.

The electronic structure and spin–orbit-induced spin splitting in antimonene with vacancy defects

RSC Advances ◽  
2016 ◽  
Vol 6 (70) ◽  
pp. 66140-66146 ◽  
Author(s):  
Lifang Yang ◽  
Yan Song ◽  
Wenbo Mi ◽  
Xiaocha Wang
Keyword(s):  
Electronic Structure ◽  
Electronic Properties ◽  
First Principles ◽  
Spin Splitting ◽  
Spin Orbit ◽  
First Principles Calculations ◽  
Vacancy Defects

We study the geometric, electronic properties, and spin splitting in monovacancy (MV) and divacancy (DV) antimonene with five different models using first-principles calculations.

Analysis of Wurtzite GaN/AlGaN Quantum Well Lasers from First-Principles Calculations

1995 ◽  
Vol 395 ◽  
Author(s):  
T. Uenoyama ◽  
M. Suzuki
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
First Principles ◽  
Optical Gain ◽  
Quantum Well Lasers ◽  
First Principles Calculation ◽  
Spin Orbit ◽  
Orbit Splitting ◽  
Large Hole ◽  
Spin Orbit Splitting

ABSTRACTOptical gain of wurtzite GaN/AlGaN quantum wells has been studied from a first-principles calculation using the k • p method. Most of the parameters in the k • p method were determined by fitting the band structures by the first-principles calculation. Owing to the small spin-orbit splitting energies of the wurtzite GaN and AIN, the optical gain has been calculated using the 6×6 Hamiltonian for the valence band. It is found that the large hole effective masses and the small spin-orbit splitting cause the higher threshold current density of wurtzite GaN/AlGaN quantum well lasers.

scholarly journals Prediction of giant and ideal Rashba-type splitting in ordered alloy monolayers grown on a polar surface

2020 ◽  
Author(s):  
Mingxing Chen ◽  
Feng Liu
Keyword(s):  
Majorana Fermions ◽  
Spin Orbit ◽  
First Principles Calculations ◽  
Surface Alloying ◽  
Orbit Splitting ◽  
Polar Surface ◽  
Spintronic Devices ◽  
Spin Orbit Splitting ◽  
Low Dimensional ◽  
Low Dimensional Materials

Abstract A large and ideal Rashba-type spin-orbit splitting is desired for the applications of materials in spintronic devices and the detection of Majorana Fermions in solids. Here, we propose an approach to achieve giant and ideal spin-orbit splittings through a combination of ordered surface alloying and interface engineering, that is, growing alloy monolayers on an insulating polar surface. We illustrate this unique strategy by means of first-principles calculations of buckled hexagonal monolayers of SbBi and PbBi supported on Al2O3(0001). Both systems display ideal Rashba-type states with giant SO splittings, characterized with energy offsets over 600 meV and momentum offsets over 0.3 Å −1, respectively. Our study thus points to an effective way of tuning spin-orbit splitting in low-dimensional materials to draw immediate experimental interest.

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