Europhys. Lett.
Volume 63, Number 4, August 2003
Page(s) 576 - 582
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 01 November 2003
DOI: 10.1209/epl/i2003-00552-9
Europhys. Lett., 63 (4) , pp. 576-582 (2003)

Bolometric spin effect due to internal spin injection in a two-dimensional electron system

C. Zehnder, A. Wirthmann, Ch. Heyn, D. Heitmann and C.-M. Hu

Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung Universität Hamburg - Jungiusstraße 11, 20355 Hamburg, Germany

(Received 19 February 2003; accepted in final form 10 June 2003)

A novel bolometric spin effect is found in a two-dimensional electron system (2DES) around Landau level filling $\nu = 1$, which gives rise to a substantial resistance change that depends on the spin polarisation of the density of states of the 2DES at the Fermi level.

72.25.Fe - Optical creation of spin polarized carriers.
73.43.Qt - Magnetoresistance.
78.30.-j - Infrared and Raman spectra.

© EDP Sciences 2003