Sliding Wigner solid on liquid 4He

Keiya Shirahama, Kimitoshi Kono

研究成果: Article査読

65 被引用数 (Scopus)

抄録

We report a systematic experimental study of the anomalous nonlinear magnetotransport in the Wigner solid (WS) trapped on a liquid 4He surface. The ac Corbino conductivity σxx exhibits an abrupt jump at a certain driving voltage. The threshold input voltage Vth for the σxx jump varies as Vth ∝ B-0.8ω-1ns1.5E , where B, ω, ns, and E are magnetic field, frequency, electron density and pressing electric field, respectively. We interpret the σxx jump as the transition between the WS accompanied with the periodic 4He surface deformation and the WS which decouples from the surface, due to the large driving force. A simple model is presented: The rigid-potential sliding model qualitatively explains the above mentioned behaviors of Vth. We have found that the dependences of σxx on B and E are different from those of the liquid phase. The anomalous behaviors of σxx play a crucial role on the sliding model.

本文言語English
ページ(範囲)237-264
ページ数28
ジャーナルJournal of Low Temperature Physics
104
3-4
DOI
出版ステータスPublished - 1996
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学

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