Growth of Layered Single Crystal Whiskers for Fabricating Single Electron Tunneling (SET) Devices

Single crystal whiskers of nano-periodic layered structure of Bi₂Sr₂Ca₂Cu_2.5Te_0.5O_x for fabricating SET devices were successfully grown. The observation of multi-branch structures means that the grown whisker works as an interlayer-tunneling stack of series array and can use as a new electronic device using intrinsic Josephson effects. The electrical transport characteristics and size dependencies of these whiskers owing to the growing parameters like component ratio, heating temperature, oxygen flow rate and growth time will be discussed for applying SET devices.