【学术报告】Kimitoshi Kono ---Surface State Electrons on liquid helium surface
发布时间: 2016-06-15   浏览次数: 240

 报告时间:2016年6月21日(周二)下午2:30

 报告地点:三教 104

 题目:Surface State Electrons on liquid helium surface

 报告人:Kimitoshi Kono  教 授(Team Leader, Quantum Condensed Phases Research, RIKEN CEMS)

邀请人:张国权 曹学伟

内容简介:

  Electrons slowly approaching from outside to liquid helium surface cannot enter liquid He because of large negative electron affinity of He atoms.  Rather, they form a weak bound state in the vicinity of surface by the action of image charges of individual electrons in front of the surface, the image charge which is analogous to one induced at the metal surface, but the magnitude is very much smaller. The surface state electrons on liquid helium is known to form the Wigner solid, a pure electron lattice.  In this seminar, we report about peculiar transport properties of the Wigner solid on a liquid He surface.  In addition, the investigation of superfluid helium-3 surface by means of surface state electrons and ions may be briefly mentioned.