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Recombination kinetics of acceptor-bound holes in heterostructures: A probe of the local configuration of magnetically frozen electron insulators

Falko, Vladimir (1994) Recombination kinetics of acceptor-bound holes in heterostructures: A probe of the local configuration of magnetically frozen electron insulators. Physical Review B, 49 (3). pp. 2242-2245. ISSN 0163-1829

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Abstract

We show that the kinetics of recombination of holes bound at accepters from a delta-doped monolayer in a heterostructure with magnetically frozen two-dimensional (2D) electrons evolves according to the power law I(t) proportional to t(-1). This behavior is universal for any kind of 2D electron insulator (ordered or disordered) in the ultra-quantum-limit and follows over a wide time range after the photoexcitation pulse. The difference between ordered and random insulating phases shows up at the longest time delays: The ordering of electrons into a Wigner lattice yields an asymptotical single lifetime decay tail, with a recombination rate whose temperature dependence is described by the characteristic Debye-Waller-type factor.

Item Type: Article
Journal or Publication Title: Physical Review B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57086
Deposited By: ep_importer_pure
Deposited On: 01 Oct 2012 11:30
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:58
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57086

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