標題: | Energy states and magnetization in nanoscale quantum rings |
作者: | Voskoboynikov, O Li, YM Lu, HM Shih, CF Lee, CP 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics |
公開日期: | 15-十月-2002 |
摘要: | In this paper we calculate electron energy states and magnetization for torus shaped nanoscale quantum rings with external magnetic fields. We use the three-dimensional effective one-band Hamiltonian, the energy and position-dependent quasiparticle effective mass approximation, and the Ben Daniel-Duke boundary conditions. The dependence of the energy spectrum on the sizes and shapes of the quantum rings was calculated and the result agrees with experimental observations. Penetration of the magnetic field into torus region results in an aperiodic oscillation of magnetization at zero temperature. It saturates with the increasing of the magnetic field strength. |
URI: | http://dx.doi.org/10.1103/PhysRevB.66.155306 http://hdl.handle.net/11536/28447 |
ISSN: | 1098-0121 |
DOI: | 10.1103/PhysRevB.66.155306 |
期刊: | PHYSICAL REVIEW B |
Volume: | 66 |
Issue: | 15 |
起始頁: | 0 |
結束頁: | 0 |
顯示於類別: | 期刊論文 |