Spatially resolved and time-resolved imaging of transport of indirect excitons in high magnetic fields

C. J. Dorow, M. W. Hasling, E. V. Calman, L. V. Butov, J. Wilkes, K. L. Campman, and A. C. Gossard

Phys. Rev. B 95, 235308 – Published 28 June 2017; Erratum Phys. Rev. B 99, 079902 (2019)

Abstract

We present the direct measurements of magnetoexciton transport. Excitons give the opportunity to realize the high magnetic-field regime for composite bosons with magnetic fields of a few tesla. Long lifetimes of indirect excitons allow the study of kinetics of magnetoexciton transport with time-resolved optical imaging of exciton photoluminescence. We performed spatially, spectrally, and time-resolved optical imaging of transport of indirect excitons in high magnetic fields. We observed that an increasing magnetic field slows down magnetoexciton transport. The time-resolved measurements of the magnetoexciton transport distance allowed for an experimental estimation of the magnetoexciton diffusion coefficient. An enhancement of the exciton photoluminescence energy at the laser excitation spot was found to anticorrelate with the exciton transport distance. A theoretical model of indirect magnetoexciton transport is presented and is in agreement with the experimental data.

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Received 24 May 2017

DOI:https://doi.org/10.1103/PhysRevB.95.235308

Physics Subject Headings (PhySH)

Excitons Magnetoresistance

III-V semiconductors Quantum wells

Time-resolved photoluminescence

Condensed Matter, Materials & Applied Physics

Erratum

Erratum: Spatially resolved and time-resolved imaging of transport of indirect excitons in high magnetic fields [Phys. Rev. B 95, 235308 (2017)]

C. J. Dorow, M. W. Hasling, E. V. Calman, L. V. Butov, J. Wilkes, K. L. Campman, and A. C. Gossard

Phys. Rev. B 99, 079902 (2019)

Authors & Affiliations

C. J. Dorow¹, M. W. Hasling¹, E. V. Calman¹, L. V. Butov¹, J. Wilkes², K. L. Campman³, and A. C. Gossard³

¹Department of Physics, University of California at San Diego, La Jolla, California 92093-0319, USA
²School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA Wales, United Kingdom
³Materials Department, University of California at Santa Barbara, Santa Barbara, California 93106-5050, USA

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Vol. 95, Iss. 23 — 15 June 2017

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