Field-Induced Superconductivity in Electric Double Layer Transistors
Field-Induced Superconductivity in Electric Double Layer Transistors
复制标题
DOI：
10.7566/jpsj.83.032001
复制
发表时间：
2014-03-01
影响因子：
1.7
通讯作者：
Iwasa, Yoshihiro
中科院分区：
文献类型：
--
作者：
Ueno, Kazunori;Shimotani, Hidekazu;Iwasa, Yoshihiro
自1960年场效应晶体管（FET）发明以来，超导性的电场调谐一直是固态物理学中的一个长期问题。由于传统FET器件中有限的载流子密度，电场诱导超导被认为在原则上是可能的，但在实践中是不可能的。然而，在过去的几年里，这种限制已经被克服了引入电化学概念，电场诱导超导已经实现。在形成于电化学界面处的双电层（EDL）中，产生极高的电场，因此存在足以诱导超导性的高密度电荷载流子，并将其共同用作被称为EDL电容器的电荷累积装置。场致超导性已被用来建立T c和载流子密度之间的关系，现在可以用来寻找新的超导体。在这里，我们回顾了电场诱导超导使用FET器件，特别是在EDL晶体管的最新进展的重点。
Electric field tuning of superconductivity has been a long-standing issue in solid state physics since the invention of the field-effect transistor (FET) in 1960. Owing to limited available carrier density in conventional FET devices, electric-field-induced superconductivity was believed to be possible in principle but impossible in practice. However, in the past several years, this limitation has been overcome by the introduction of an electrochemical concept, and electric-field-induced superconductivity has been realized. In the electric double layer (EDL) formed at the electrochemical interfaces, an extremely high electric field is generated and hence high-density charge carriers sufficient to induce superconductivity exist and are collectively used as a charge accumulation device known as an EDL capacitor. Field-induced superconductivity has been used to establish the relationship between T-c and carrier density and can now be used to search for new superconductors. Here, we review electric-field-induced superconductivity using an FET device, with a particular focus on the latest advances in EDL transistors.