Abstract
We review ground-state properties and collective excitations of semiconductor quantum dots in a magnetic field obtained from current-spin density-functional theory. Due to exchange-correlation, a generalized Hund’s rule in magnetic field can be established which leads to spin alignment in partially occupied energy shells at the Fermi energy. This results, in distinct spin structures in single-electron addition spectra. Current-dependent exchange-correlation modifies the magnetic-field dependence of the ground state configuration and leads to deviations from plain spin-density calculations. Moreover it gives rise to spontaneous current textures at zero magnetic field. Collective excitation spectra, explicitly calculated for inelastic light scattering, exhibit novel features in their magnetic field dependence due to a finite ground-state spin density.
Preview
Unable to display preview. Download preview PDF.
Bibliography
B.T. Miller, W. Hansen, S. Manus, R.J. Luyken, A. Lorke, J.P. Kotthaus, S. Huant, G. Medeiros-Ribeiro, and P.M. Petroff, Phys. Rev. B56, 6764 (1997).
C. Schüller, G. Biese, C. Steinebach, D. Heitmann, P. Grambow, and K. Eberl, Phys. Rev. B54, R17304 (1996); C. Schüller, K. Keller, G. Biese, E. Ulrichs, L. Rolf, C. Steinebach, and D. Heitmann, Phys. Rev. Lett. 80, 2673 (1998).
P.L. McEuen, E.B. Foxman, U. Meirav, M.A. Kastner, Y. Meir, N.S. Wingreen, and S.J. Wind, Phys. Rev. Lett. 66, 1926 (1991); P.L. McEuen, E.B. Foxman, J. Kinaret, U. Meirav, M.A. Kastner, N.S. Wingreen, and S.J. Wind, Phys. Rev. B45, 11419 (1992).
S. Tarucha, D.G. Austing, T. Honda, R.J. van der Haage, and L.P. Kouwenhoven, Phys. Rev. Lett. 77, 3613 (1996).
R.C. Ashoori, H.L. Störmer, J.S. Weiner, L.N. Pfeiffer, K.W. Baldwin, and K.W. West, Phys. Rev. Lett. 71, 613 (1993); R.C. Ashoori, Nature 379, 413 (1996).
G. Vignale and M. Rasolt, Phys. Rev. B37, 10685 (1988)..
M. Rasolt and F. Perrot, Phys. Rev. Lett. 69, 2563 (1992); M. Ferconi and G. Vignale, Phys. Rev. B50, 14722 (1994).
O. Steffens, U. Rössler, and M. Suhrke, Europhys. Lett. 42, 529 (1998); O. Steffens, U. Rössler, and M. Suhrke, Europhys. Lett. 44, 222 (1998).
M. Koskinen., M. Manninen, and S. Reimann, Phys. Rev. Lett. 79, 1389 (1997).
D. Heitmann and J.P. Kotthaus, Physics Today 46, (No. 6), 56 (1993).
A. Pinczuk and G. Abstreiter, in: M. Cardona and G. Güntherodt (eds.), Light Scattering in Solids V., pp. 153–211 (Springer, Berlin 1988).
O. Steffens, and M. Suhrke, Phys. Rev. Lett., in press (1999).
L. Brey, N.F. Johnson, and B.I. Halperin, Phys. Rev. B40, 10647 (1989).
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1999 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
About this paper
Cite this paper
Steffens, O., Suhrke, M., Rössler, U. (1999). Ground state and collective excitations of quantum dots: Correlation effects and Hund’s rule in magnetic field. In: Kramer, B. (eds) Advances in Solid State Physics 39. Advances in Solid State Physics, vol 39. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107469
Download citation
DOI: https://doi.org/10.1007/BFb0107469
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-41573-2
Online ISBN: 978-3-540-44553-1
eBook Packages: Springer Book Archive