Density-functional calculations of magnetoplasmons in quantum rings

Article

关键词: 2-DIMENSIONAL ELECTRON-GAS;    STRONG MAGNETIC-FIELDS;    INFRARED EDGE MODES;    COLLECTIVE EXCITATIONS;    DOTS;    ABSORPTION;    ANTIDOTS;   

DOI  :  10.1103/PhysRevB.59.15301

来源: SCIE

【 摘 要 】

We have studied the structure and dipole charge-density response of nanorings as a function of the magnetic field using local-spin-density-functional theory. Two small rings consisting of 12 and 22 electrons confined by a positively charged background are used to represent the cases of narrow and wide rings. The results are qualitatively compared with experimental data existing on microrings and on antidots, A smaller ring containing five electrons is also analyzed to allow for a closer comparison with a recent experiment on a two-electron quantum ring. [S0163-1829(99)02723-X].

【 授权许可】

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