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Magnetic dipole and electric quadrupole responses of elliptic quantum dots in magnetic fields

Enrico Lipparini·Llorenç Serra·Antonio Puente
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Abstract

The magnetic dipole (M1) and electric quadupole (E2) responses of two-dimensional quantum dots with an elliptic shape are theoretically investigated as a function of the dot deformation and applied static magnetic field. Neglecting the electron-electron interaction we obtain analytical results which indicate the existence of four characteristic modes, with different $B$-dispersion of their energies and associated strengths. Interaction effects are numerically studied within the time-dependent local-spin-density theory, assessing the validity of the non-interacting picture.

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Enrico Lipparini, Llorenç Serra, Antonio Puente. 2001-05-15. Magnetic dipole and electric quadrupole responses of elliptic quantum dots in magnetic fields. https://doi.org/10.1140/epjb%2Fe2002-00172-3

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