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Intersubband dynamics of spin polarized carriers

Title data

Vogel, M. ; Vagov, Alexei ; Axt, Vollrath M. ; Seilmeier, Alois ; Kuhn, Tilmann:
Intersubband dynamics of spin polarized carriers.
In: Journal of Physics: Conference Series. Vol. 193 (2009) Issue 1 . - Art.Nr. 012098, 4 S..
ISSN 1742-6596
DOI: https://doi.org/10.1088/1742-6596/193/1/012098

Abstract in another language

The intersubband (ISB) dynamics of spin orientated carriers generated in undoped quantum wells by circularly polarized interband excitations is analyzed theoretically. It is shown that short THz pulses in resonance with the lowest conduction ISB transition can be used to switch the spin orientation in a given subband without changing the total subband occupation. For longer ISB pulses a periodic modulation of the spin orientation is found. However, when the Coulomb interaction is taken into account the total subband density is typically also modulated which differs from expectations based on calculations in a three band model of non-interacting particles. The dependence on the ratio of the subband masses is discussed as well as the observability of these effects in pump-probe type measurements.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: intersubband dynamics; ultrafast dynamics; spintronics; spin polarized carriers; Terahertz control; Terahertz excitation
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 30 Oct 2017 10:43
Last Modified: 30 Oct 2017 10:43
URI: https://eref.uni-bayreuth.de/id/eprint/40203