New technique for demonstrating Majorana nature of surface bound states in the superfluid helium-3

我做了基础研究，开发了一种新的测量系统，利用毛细凝结效应和微型squid来展示超流体3He-B自由表面表面束缚态的马约拉纳性质。制备了宽度为1 ~ 10微米的微通道结构，并研究了液氦在微通道中毛细管凝聚的性质。从观察到的被困在毛细管冷凝液体4He表面的电子的输运性质，我证明了冷凝液体的表面具有预期的形状。我进一步表明，当电子密度发生变化时所观察到的振荡是由维格纳晶体的重入性熔化引起的。

I made basic investigation to develop a new measurement system using the capillary condensation effect and a micro-SQUID for demonstrating Majorana nature of surface bound states at a free surface of the superfluid 3He-B. I fabricated micro-channel structures of a width 1-10 micrometer, and investigated the properties of the liquid helium capillary-condensed in the micro-channels. From the observed transport properties of electrons trapped on the surface of the capillary-condensed liquid 4He, I showed that the surface of the condensed liquid has an expected shape. I further showed that the oscillation observed when the electron density was varied arose from the reentrant melting of a Wigner crystal.