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Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination

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Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination. / Ponomarev, Y V ; Usher, Alan; Hayne, M et al.
In: Solid State Communications, Vol. 102, No. 1, 04.1997, p. 53-58.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ponomarev, YV, Usher, A, Hayne, M, Rodgers, PJ, Gallagher, BL, Henini, M & Hill, G 1997, 'Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination', Solid State Communications, vol. 102, no. 1, pp. 53-58. https://doi.org/10.1016/S0038-1098(96)00765-X

APA

Ponomarev, Y. V., Usher, A., Hayne, M., Rodgers, P. J., Gallagher, B. L., Henini, M., & Hill, G. (1997). Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination. Solid State Communications, 102(1), 53-58. https://doi.org/10.1016/S0038-1098(96)00765-X

Vancouver

Ponomarev YV, Usher A, Hayne M, Rodgers PJ, Gallagher BL, Henini M et al. Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination. Solid State Communications. 1997 Apr;102(1):53-58. doi: 10.1016/S0038-1098(96)00765-X

Author

Ponomarev, Y V ; Usher, Alan ; Hayne, M et al. / Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination. In: Solid State Communications. 1997 ; Vol. 102, No. 1. pp. 53-58.

Bibtex

@article{65f58ad24f804fda8a18838f47d345ca,
title = "Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination",
abstract = "We present evidence for the occurrence of an insulating phase both at zero and high magnetic fields, observed in extremely dilute two-dimensional hole systems in GaAs-Al1-xGaxAs quantum wells. At the highest hole concentrations the insulating phase is consistent with the magnetically-induced Wigner solid. As the hole concentration is persistently reduced by illumination of the structures, an insulator-metal-insulator transition develops in the magneto-transport around filling factor nu = 1 and eventually the structure becomes insulating at all magnetic fields. The zero-field insulator emerges at a critical value of the dimensionless inter-particle separation, r(s), of around 14, the highest value yet reported for this transition. We discuss these observations in the light of recent studies of the Wigner solid and the Hall insulator and invoke a model of the recombination kinetics of our experiments which accounts for the reduction in hole concentration under illumination. (C) 1997 Published by Elsevier Science Ltd.",
author = "Ponomarev, {Y V} and Alan Usher and M Hayne and Rodgers, {P J} and Gallagher, {B L} and M Henini and G Hill",
year = "1997",
month = apr,
doi = "10.1016/S0038-1098(96)00765-X",
language = "English",
volume = "102",
pages = "53--58",
journal = "Solid State Communications",
issn = "0038-1098",
publisher = "Elsevier Limited",
number = "1",

}

RIS

TY - JOUR

T1 - Milli-Kelvin magneto-transport studies of two-dimensional hole systems under illumination

AU - Ponomarev, Y V

AU - Usher, Alan

AU - Hayne, M

AU - Rodgers, P J

AU - Gallagher, B L

AU - Henini, M

AU - Hill, G

PY - 1997/4

Y1 - 1997/4

N2 - We present evidence for the occurrence of an insulating phase both at zero and high magnetic fields, observed in extremely dilute two-dimensional hole systems in GaAs-Al1-xGaxAs quantum wells. At the highest hole concentrations the insulating phase is consistent with the magnetically-induced Wigner solid. As the hole concentration is persistently reduced by illumination of the structures, an insulator-metal-insulator transition develops in the magneto-transport around filling factor nu = 1 and eventually the structure becomes insulating at all magnetic fields. The zero-field insulator emerges at a critical value of the dimensionless inter-particle separation, r(s), of around 14, the highest value yet reported for this transition. We discuss these observations in the light of recent studies of the Wigner solid and the Hall insulator and invoke a model of the recombination kinetics of our experiments which accounts for the reduction in hole concentration under illumination. (C) 1997 Published by Elsevier Science Ltd.

AB - We present evidence for the occurrence of an insulating phase both at zero and high magnetic fields, observed in extremely dilute two-dimensional hole systems in GaAs-Al1-xGaxAs quantum wells. At the highest hole concentrations the insulating phase is consistent with the magnetically-induced Wigner solid. As the hole concentration is persistently reduced by illumination of the structures, an insulator-metal-insulator transition develops in the magneto-transport around filling factor nu = 1 and eventually the structure becomes insulating at all magnetic fields. The zero-field insulator emerges at a critical value of the dimensionless inter-particle separation, r(s), of around 14, the highest value yet reported for this transition. We discuss these observations in the light of recent studies of the Wigner solid and the Hall insulator and invoke a model of the recombination kinetics of our experiments which accounts for the reduction in hole concentration under illumination. (C) 1997 Published by Elsevier Science Ltd.

U2 - 10.1016/S0038-1098(96)00765-X

DO - 10.1016/S0038-1098(96)00765-X

M3 - Journal article

VL - 102

SP - 53

EP - 58

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

IS - 1

ER -