Dynamical decoupling and recoupling of the Wigner solid to a liquid helium substrate

David G. Rees, Sheng-Shiuan Yeh, Ban-Chen Lee, Simon K. Schnyder, Francis I. B. Williams, Juhn-Jong Lin, Kimitoshi Kono*

*Corresponding author for this work

研究成果: Article同行評審


We investigate the dynamical interaction between an electron crystal trapped above the surface of liquid helium and surface waves ('ripplons') excited by its motion. At rest, the electron system is 'dressed' by static ripplons to form 'ripplopolaron' states. As the electrons move, resonant ripplon scattering results in a growth of the ripplopolaron effective mass, on timescales comparable with the inverse of the ripplon frequency (similar to 100 ns). Under sufficient driving force, the electron system decouples from the surface waves and moves at high velocity, before decelerating sharply when the electron solid and surface excitations recouple to form a 'new' ripplopolaron system. The mass of the newly formed ripplopolarons is similar to that in the initial static case.

期刊Physical Review B
出版狀態Published - 24 八月 2020