DEVELOPMENT OF A NEW TECHNIQUE FOR THE STUDY OF SUPERFLUID ィイD13ィエD1He FILMS

Superfluid D13 He is a so called“P-wave superfluidity”and shows ainsotropic properties， which should be enhanced in films and boundaries This project is aimed to developp the experiment technich which suits to the study of such low dimensional superfluid D13 He Namely，我们已经开发了技术来驱动电影，这是由中间（ID）电容器的意思组成的。ID电容器是由使用电子束光刻技术制造的。The area of the ID capacitor is 2 x2 mm-D12-D1。每个手指的宽度为10弧度m，周期为20弧度m。通过应用每个电容器手指之间的潜在差异，强电场产生了它们之间的差异。还有第三种声音的兴奋和检测，它与运河中的波浪模式相似，但还没有被观察到，我们已经成功地观察到了电影流，它也是具有超流体性的特征。我们认为，第三种声音的诅咒仍然很大。因此，这是必要的，以降低兴奋的频率，并在未来的实验中提高低温温度。

Superfluid ィイD13ィエD1He is a so called "P-wave superfluidity" and shows ainsotropic properties, which should be enhanced in films and boundaries This project is aimed to develop the experiment technich which suits to the study of such low dimensional superfluid ィイD13ィエD1He Namely, we have develop the technique to drive the film by means of the interdigitated (ID) capacitor.The ID capacitor is fablicated by using electron beam rithography. The area of the ID capacitor is 2x2 mmィイD12ィエD1. The width of each finger is 10 μm and the period is 20 μm. By applying potential difference across each capacitor fingers, strong electric field is produced between them.Although the excitation and detection of third sound, which is the wave mode similar to the water wave in a canal, has not yet been observed, we have succeeded to observe the film flow, which is also characteristic to the superfluidity.We consider that the daming of third sound is still to large. Therefore, it is necessary to lower the frequency of the excitation and to achive lower temperature in the future experiment.