Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases

A. Blackburn, K. Djerfi, M. I. Dykman, Christopher Fang-Yen, P. Fozooni, A. Kristensen, M. J. Lea, P. J. Richardson, A. Santrich-Badal, R. W. van der Heijden

Research output: Contribution to journalArticle

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Abstract

The magnetoconductivity σ(B) in the two-dimensional (2D) nondegenerate electron fluid and 2D solid has been analyzed theoretically and investigated experimentally, from 60 mK to 1.3 K in magnetic fields B up to 8 Tesla. In the fluid phase, σ(B) is described by the Drude model in weak to moderately strong classical fields, including the range μB » 1. At higher fields (depending on the density) σ(B) is nonmonotonous and displays a minimum. This behavior is due to many-electron effects, which can be described in terms of cyclotron orbit diffusion controlled by an internal fluctuational electric field. The squared internal field derived from experiments is in good agreement with computer simulations. In the solid phase electron transport becomes strongly non-linear even for weak driving voltages V0. Experimentally we determine, from the losses, the effective AC Corbino conductivity at a frequency f. We find that σ(B) ∝ fV0/B for V0 below some threshold voltage Vc. In this region the Hall velocity vH approaches the ripplon phase velocity v1 = w(G1)/G1 at the first reciprocal lattice vector G1 of the electron solid. We suggest that this behaviour is due to to a resonant drag force from the Bragg-Cerenkov radiation of coherent ripplons by the moving crystal.

Original languageEnglish
Pages (from-to)3056-3062
Number of pages7
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 6
DOIs
Publication statusPublished - 1996 Dec 1
Externally publishedYes

Fingerprint

liquid helium
solid phases
fluids
many electron effects
Cerenkov radiation
electrons
phase velocity
threshold voltage
drag
cyclotrons
alternating current
computerized simulation
orbits
conductivity
electric fields
electric potential
magnetic fields
crystals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Blackburn, A., Djerfi, K., Dykman, M. I., Fang-Yen, C., Fozooni, P., Kristensen, A., ... van der Heijden, R. W. (1996). Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases. Czechoslovak Journal of Physics, 46(SUPPL. 6), 3056-3062. https://doi.org/10.1007/BF02548110

Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases. / Blackburn, A.; Djerfi, K.; Dykman, M. I.; Fang-Yen, Christopher; Fozooni, P.; Kristensen, A.; Lea, M. J.; Richardson, P. J.; Santrich-Badal, A.; van der Heijden, R. W.

In: Czechoslovak Journal of Physics, Vol. 46, No. SUPPL. 6, 01.12.1996, p. 3056-3062.

Research output: Contribution to journalArticle

Blackburn, A, Djerfi, K, Dykman, MI, Fang-Yen, C, Fozooni, P, Kristensen, A, Lea, MJ, Richardson, PJ, Santrich-Badal, A & van der Heijden, RW 1996, 'Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases', Czechoslovak Journal of Physics, vol. 46, no. SUPPL. 6, pp. 3056-3062. https://doi.org/10.1007/BF02548110
Blackburn A, Djerfi K, Dykman MI, Fang-Yen C, Fozooni P, Kristensen A et al. Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases. Czechoslovak Journal of Physics. 1996 Dec 1;46(SUPPL. 6):3056-3062. https://doi.org/10.1007/BF02548110
Blackburn, A. ; Djerfi, K. ; Dykman, M. I. ; Fang-Yen, Christopher ; Fozooni, P. ; Kristensen, A. ; Lea, M. J. ; Richardson, P. J. ; Santrich-Badal, A. ; van der Heijden, R. W. / Magnetotransport of 2D electrons on liquid helium in the fluid and solid phases. In: Czechoslovak Journal of Physics. 1996 ; Vol. 46, No. SUPPL. 6. pp. 3056-3062.
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AU - Kristensen, A.

AU - Lea, M. J.

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