Nanofriction of 3He monolayer on superfluid 4He film

研究了超低温下^<3>He-^<4>He混合膜的纳米摩擦。在100 MHz的QCM实验中，我们惊奇地观察到在金基底上的一部分^<3>He在下面的^<4>He层上以大约0.在v=35μm/s以上，通过钉扎-脱钉机制，在2K时发生了钉扎-脱钉反应。为了描述的机制，一个可能的方案有关的超流过渡的4 He流体层的建议。

We studied a nanofriction of a^<3> He-^<4> He mixture film at ultra low temperatures. By a QCM experiment at 100 MHz with a planar gold substrate, we observed surprisingly that a part of^<3> He on an underlying^<4> He layer slips at around 0. 2 K by a pinning-depinning mechanism above v=35μm/s. To describe the mechanism, a possible scenario related to the superfluid transition of the 4He fluid layer is suggested.