论文标题
在斜角钻石砧上使用硼龙钻石电极进行超导硫氢化物的电运输测量
Electrical transport measurements for superconducting sulfur hydrides using boron-doped diamond electrodes on beveled diamond anvil
论文作者
论文摘要
一个可以产生多麦巴的极高压力的钻石砧细胞（DAC）是开发进一步的物理学的有希望的工具，例如高转移温度的超导性。但是，使用DAC是此类功能材料最重要的特性之一，因此使用DAC非常困难，因为样品空间非常小，并且在极端条件下电极的变形。在这项研究中，我们在钻石砧的斜面表面上制造了硼隆式钻石微电极和未凝固的钻石绝缘材料。通过使用开发的DAC，我们证明了硫磺H $ _2 $ S的电运输测量值，该测量在高压下被称为压力诱导的高转移温度超导h $ _3 $ s。测量结果是在高压至192 GPA的高压下成功进行的，然后从纯硫和某些冲浪者氢化物组成的多步超导过渡（可能HS $ _2 $）被观察到零电阻。
A diamond anvil cell (DAC) which can generate extremely high pressure of multi-megabar is promising tool to develop a further physics such a high-transition temperature superconductivity. However, electrical transport measurements, which is one of the most important properties of such functional materials, using the DAC is quite difficult because the sample space is very small and a deformation of electrodes under extreme condition. In this study, we fabricated a boron-doped diamond micro-electrode and an undoped diamond insulation on a beveled culet surface of the diamond anvil. By using the developed DAC, we demonstrated the electrical transport measurements for sulfur hydride H$_2$S which known as a pressure-induced high-transition temperature superconducting H$_3$S at high pressure. The measurements were successfully conducted under high pressure up to 192 GPa, and then a multi-step superconducting transition composed from pure sulfur and some kinds of surfer hydrides, which is possible HS$_2$, was observed with zero resistance.
