Compact cryogenic Kerr microscope for time-resolved studies of electron spin transport in microstructures

P. J. Rizo*, A. Pugzlys, J. Liu, D. Reuter, A. D. Wieck, C. H. van der Wal, P. H. M. van Loosdrecht, A. Pugžlys

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

6 Citaten (Scopus)
356 Downloads (Pure)

Samenvatting

A compact cryogenic Kerr microscope for operation in the small volume of high-field magnets is described. It is suited for measurements both in Voigt and Faraday configurations. Coupled with a pulsed laser source, the microscope is used to measure the time-resolved Kerr rotation response of semiconductor microstructures with similar to 1 mu m spatial resolution. The microscope was designed to study spin transport, a critical issue in the field of spintronics. It is thus possible to generate spin polarization at a given location on a microstructure and probe it at a different location. The operation of the microscope is demonstrated by time-resolved measurements of micrometer distance diffusion of spin polarized electrons in a GaAs/AlGaAs heterojunction quantum well at 4.2 K and 7 T.

Originele taal-2English
Artikelnummer123904
Pagina's (van-tot)123904-1-123904-8
Aantal pagina's8
TijdschriftReview of Scientific Instruments
Volume79
Nummer van het tijdschrift12
DOI's
StatusPublished - dec.-2008

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