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

展示超流氦 3 表面束缚态马约拉纳性质的新技术

• 批准号: 24654114
• 负责人: IKEGAMI Hiroki
• 金额: $ 2.41万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-24654114/
• 关键词: 超流動ヘリウム３; 表面束縛状態; トポロジカル超流動; マヨラナ粒子; マイクロ構造; 毛管凝縮; 微小SQUID

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.

为了研究3 He-B超流体自由表面束缚态的Majorana性质，我们利用毛细凝聚效应和微型SQUID建立了一个新的测量系统。制作了宽度为1-10 μ m的微通道结构，并研究了液氦在微通道中的毛细冷凝特性。从所观察到的毛细管冷凝液体4 He表面上捕获的电子的输运性质，我表明冷凝液体的表面具有预期的形状。我进一步表明，观察到的振荡时，电子密度的变化引起的重入熔化的维格纳晶体。

项目成果

Reentrant melting of a quasi-one-dimensional Wigner crystal

准一维维格纳晶体的重入熔化

• 发表时间: 2012
• 作者: N.R. Beysengulov;D.G. Rees;池上弘樹;D.A. Tayurskii;河野公俊;池上弘樹
• 通讯作者: 池上弘樹

Nonlinear Transport of the Wigner Crystal in a Confinement Geometry

维格纳晶体在约束几何中的非线性输运

• 发表时间: 2013
• 作者: N.R. Beysengulov;D.G. Rees;池上弘樹;D.A. Tayurskii;河野公俊
• 通讯作者: 河野公俊

Confinement effect on electron transport of Wigner solid on liquid He

液态氦上维格纳固体电子传输的限制效应

• 发表时间: 2013
• 作者: N.R. Beysengulov;D.G. Rees;池上弘樹;D.A. Tayurskii;河野公俊
• 通讯作者: 河野公俊

Mobility of Ions Trapped Below a Free Surface of Superfluid 3He

超流体 3He 自由表面下方捕获的离子的迁移率

• DOI: 10.7566/jpsj.82.124602
• 发表时间: 2013
• 期刊: Journal of the Physical Society of Japan
• 影响因子: 1.7
• 作者: Hiroki Ikegami;Suk Bum Chung;and Kimitoshi Kono
• 通讯作者: and Kimitoshi Kono

Nonlinear Transports of Electrons on Liquid 4He in a 1.6μm Channel

1.6μm 通道中液体 4He 上电子的非线性传输

• 发表时间: 2011
• 作者: H. Ikegami;H. Akimoto;K. Kono
• 通讯作者: K. Kono