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Quantum transport through a Z-shaped silicene nanoribbon

Chinese Physics B 2017年第4期26卷 415-419页

作者： A Ahmadi Fouladi Department of Physics Sari BranchIslamic Azad UniversitySariIran

In this work,the electronic transport properties of Z-shaped silicene nanoribbon（ZsSiNR） structure are *** calculations are based on the tight-binding model and Green＇s function method in Landauer-Biittiker formalism,in which the electronic density of states（DOS）,transmission probability,and current-voltage characteristics of the system are calculated,*** is shown that the geometry of the ZsSiNR structure can play an important role to control the electron transport through the *** is observed that the intensity of electron localization at the edges of the ZsSiNR decreases with the increase of the spin-orbit interaction（SOI） ***,the semiconductor to metallic transition occurs by increasing the SOI *** present theoretical results may be useful to design silicene-based devices in nanoelectronics.

关键词： Z-shaped silicene nanoribbon electronic transport Green's function method spin–orbit interaction

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spin and valley half metal induced by staggered potential and magnetization in silicene

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Chinese Physics B 2014年第1期23卷 379-383页

作者：汪萨克田宏玉杨永宏汪军 Department of Physics Southeast University Nanjing 210096 China

We investigate the electron transport in silicene with both staggered electric potential and magnetization; the latter comes from the magnetic proximity effect by depositing silicene on a magnetic insulator. It is shown that the silicene could be a spin and valley half metal under appropriate parameters when the spin–orbit interaction is considered; further, the filtered spin and valley could be controlled by modulating the staggered potential or magnetization. It is also found that in the spin-valve structure of silicene, not only can the antiparallel magnetization configuration significantly reduce the valve-structure conductance, but the reversing staggered electric potential can cause a high-performance magnetoresistance due to the spin and valley blocking effects. Our findings show that the silicene might be an ideal basis for the spin and valley filter analyzer devices.

关键词： silicene spin–orbit interaction spin and valley half metal spin and valley blocking effect

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Energy level splitting of a 2D hydrogen atom with Rashba coupling in non-commutative space

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Communications in Theoretical Physics 2020年第12期72卷 116-122页

作者： S Aghababaei G Rezaei Department of Physics College of SciencesYasouj UniversityYasouj75918-74934Iran

We explore the non-commutative(NC)effects on the energy spectrum of a two-dimensional hydrogen *** consider a confined particle in a central potential and study the modified energy states of the hydrogen atom in both coordinates and momenta of non-commutativity *** considering the Rashba interaction,we observe that the degeneracy of states can also be removed due to the spin of the particle in the presence of NC *** obtain the upper bounds for both coordinates and momenta versions of NC parameters by the splitting of the energy levels in the hydrogen atom with Rashba ***,we find a connection between the NC parameters and Lorentz violation parameters with the Rashba interaction.

关键词： quantum mechanics non-commutative space spin–orbit interaction

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