Excitons in motion: universal dependence of the magnetic moment on kinetic energy
Excitons in motion: universal dependence of the magnetic moment on kinetic energy
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运动中的激子:磁矩对动能的普遍依赖性
DOI:
10.1002/pssb.200777614
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
Kochereshko V
中科院分区:
文献类型:
--
作者:
Kochereshko V
We have observed remarkable changes in the magnetic properties of excitons as they acquire kinetic energy. In particular, the Zeeman splittings and diamagnetic shifts of excitonic transitions when magnetic fields are applied along the growth direction of (001) wide quantum wells of CdTe, ZnSe, ZnTe and GaAs are found to to have a strong dependence on the translational wavevectorKz. The behaviour of the Zee‐man splittings corresponds to enhancement of the magnetic moments of the excitons. This enhancement is particularly marked when their translational kinetic energy becomes comparable with the exciton Rydberg and can be described by what appears to be a universal function ofKz. A model for the behaviour is outlined which involves motionally‐induced mixing between the 1S hydrogenic exciton ground state and excited nP states. The observations imply that there are significant changes in the structure of the exciton as its translational kinetic energy increases. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
DOI:
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发表时间:
1975
期刊:
影响因子:
--
作者:
K. Cho;S. Suga;W. Dreybrodt;F. Willmann
通讯作者:
F. Willmann
影响因子:
8.6
作者:
J. Davies;D. Wolverson;V. Kochereshko;A. Platonov;R. Cox;J. Cibert;H. Mariette;C. Bodin;C. Gourgon;E. Ubyivovk;Y. Efimov;S. A. Eliseev
通讯作者:
S. A. Eliseev
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
M. Cardona;G. Güntherodt;G. Abstreiter
通讯作者:
G. Abstreiter