An analytical study of the magnetic properties of the quantum dot/ring system:Rashba,magnetic field,and electronelectron effects  

作　　者：M Shirsefat M Servatkhah S Hosseini 

机构地区：[1]Department of Physics,Marvdasht Branch,Islamic Azad University,Marvdasht,Iran [2]Department of Physics,Nanotechnology Research Center,Marvdasht Branch,Islamic Azad University,Marvdasht,Iran

出　　处：《Communications in Theoretical Physics》2025年第4期65-72,共8页理论物理通讯(英文版)

摘　　要：The magnetic behavior of a two-electron quantum dot/ring system is analytically studied with electron-electron(e-e)interaction taking into account the Rashba spin-orbit interaction(SOI)and magnetic field.The Jacobi transformation has been employed to separate the Hamiltonian of the system to the center of mass and relative terms.The Schrödinger equation is analytically solved,and energy spectra are obtained.Then,the magnetization and susceptibility are calculated.The magnetization decreases by raising the magnetic field without and with SOI,and also without e-e interaction.Also,the SOI slightly modifies the magnetization of the system without e-e interaction.The susceptibility displays a peak structure as the magnetic field changes from low values to high values.The susceptibility by considering e-e interaction and without the SOI is always negative and its value decreases by rising the magnetic field.The susceptibility displays a transition from diamagnetic to paramagnetic with e-e interaction and SOI.

关 键 词：quantum dot/ring optical properties spin-orbit interaction 

分 类 号：O469[理学—凝聚态物理]