Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures

A. Parlangeli; P. C M Christianen; A. K. Geim; J. C. Maan; L. Eaves; P. C. Main; M. Henini

Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures

A. Parlangeli, P. C M Christianen, A. K. Geim, J. C. Maan, L. Eaves, P. C. Main, M. Henini

Research output: Contribution to journal › Article › peer-review

Abstract

We observed a new discontinuity and bistability in the tunnel current of a 12-nm single-barrier GaAs/AlAs p-i-n heterostructure where a system of spatially separated two-dimensional electron and hole (e-h) layers of equal and tunable density is realized. Both features appear at T≤300 mK and are substantially enhanced in a magnetic field B≥10 T perpendicular to the layers. They correspond to a discontinuity in the e-h density and in the phase of the current magneto-oscillations, which we suggest to arise from a transition between indirect excitons and the uncoupled e-h gases. ©1999 The American Physical Society.

Original language	English
Pages (from-to)	13302-13305
Number of pages	3
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	19
Publication status	Published - 1999

Keywords

coupled quantum-wells
strong magnetic-fields
electron-hole layers
magnetoexcitons

Cite this

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title = "Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures",

abstract = "We observed a new discontinuity and bistability in the tunnel current of a 12-nm single-barrier GaAs/AlAs p-i-n heterostructure where a system of spatially separated two-dimensional electron and hole (e-h) layers of equal and tunable density is realized. Both features appear at T≤300 mK and are substantially enhanced in a magnetic field B≥10 T perpendicular to the layers. They correspond to a discontinuity in the e-h density and in the phase of the current magneto-oscillations, which we suggest to arise from a transition between indirect excitons and the uncoupled e-h gases. {\textcopyright}1999 The American Physical Society.",

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T1 - Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures

AU - Parlangeli, A.

AU - Christianen, P. C M

AU - Geim, A. K.

AU - Maan, J. C.

AU - Eaves, L.

AU - Main, P. C.

AU - Henini, M.

N1 - 260GD Times Cited:2 Cited References Count:20

PY - 1999

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N2 - We observed a new discontinuity and bistability in the tunnel current of a 12-nm single-barrier GaAs/AlAs p-i-n heterostructure where a system of spatially separated two-dimensional electron and hole (e-h) layers of equal and tunable density is realized. Both features appear at T≤300 mK and are substantially enhanced in a magnetic field B≥10 T perpendicular to the layers. They correspond to a discontinuity in the e-h density and in the phase of the current magneto-oscillations, which we suggest to arise from a transition between indirect excitons and the uncoupled e-h gases. ©1999 The American Physical Society.

AB - We observed a new discontinuity and bistability in the tunnel current of a 12-nm single-barrier GaAs/AlAs p-i-n heterostructure where a system of spatially separated two-dimensional electron and hole (e-h) layers of equal and tunable density is realized. Both features appear at T≤300 mK and are substantially enhanced in a magnetic field B≥10 T perpendicular to the layers. They correspond to a discontinuity in the e-h density and in the phase of the current magneto-oscillations, which we suggest to arise from a transition between indirect excitons and the uncoupled e-h gases. ©1999 The American Physical Society.

KW - coupled quantum-wells

KW - strong magnetic-fields

KW - electron-hole layers

KW - magnetoexcitons

UR - https://www.scopus.com/pages/publications/4243878740

M3 - Article

SN - 1098-0121

VL - 60

SP - 13302

EP - 13305

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 19

ER -

Dissociation of indirect excitons: Discontinuity and bistability in the tunnel current of single-barrier heterostructures

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