Phys. Rev. B 66, 205304 (2002) - Optical detection of magnetic fields using giant magnetoresistance in undoped coupled quantum wells

Optical detection of magnetic fields using giant magnetoresistance in undoped coupled quantum wells

S. Denev, V. Negoita, D. W. Snoke, B. Laikhtman, K. Eberl, and L. Pfeiffer

Phys. Rev. B 66, 205304 – Published 6 November 2002

Abstract

We show that undoped coupled quantum well structures of GaAs and InGaAs have a magnetoresistance effect which leads to a wavelength shift of the optical spectrum. This effect allows the optical emission to be used to detect magnetic field in the range 0–0.5 T.

Received 9 July 2002

DOI:https://doi.org/10.1103/PhysRevB.66.205304

©2002 American Physical Society

Authors & Affiliations

S. Denev, V. Negoita^*, and D. W. Snoke^†

Department of Physics and Astronomy, University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, Pennsylvania 15260

Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel

Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70506 Stuttgart, Germany

Bell Labs, Lucent Technologies 700 Mountain Avenue, Murray Hill, New Jersey

^*Present address: TRUMPF Inc., Farmington Industrial Park, Farmington, CT 06032.
^†Email adress: snoke@pitt.edu

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Issue

Vol. 66, Iss. 20 — 15 November 2002

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