Hall-velocity limited magnetoconductivity in a 2D Wigner solid |
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| Authors: | P Fozooni K Djerfi Anders Kristensen M J Lea P J Richardson A Santrich-Badal A Blackburn R W van der Heijden |
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| Institution: | 1.Department of Physics, Royal Holloway,University of London,Egham,UK;2.Department of Electronics and Computer Science,University of Southampton,Southampton,UK;3.Department of Physics,Eindhoven University of Technology,Eindhoven,The Netherlands |
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| Abstract: | The magnetoconductivity σ(B) of a classical 2D electron crystal on superfluid4He is non-linear. Experimentally we find a contribution to σ(B) which at constant field, gives σ(B)∞J x, the current density, while at constant current, σ(B) ∞ 1/B. In this region the Hall velocity νH slowly approaches the ripplon velocity νI at the first reciprocal lattice vector, due to strong electron-ripplon interactions with the helium. The magnetoconductivity decreases sharply for νH>νI. Fluctuations in σ(B) are seen above the melting temperature. |
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