New Research


2012/06/01

Semiconductor Spintronics: Understanding and controlling the electron spin in Research of spintronic

Professor:Masashi Shiraishi,Associate Professor:Takeshi Kanashima,Eiji Shikoh,Assistant Professor:Ma

   Spintronics is the field of electronics in which it utilizes and controls the two degrees of freedom of the electrons – charge and spin – to create and develop novel high-performance, multifunctional, and power-efficient semiconductor devices. Today, spintronics has advanced the conventional semiconductor technology by incorporating the spin function into the common field-effect transistor – the spin FET – which has more desirable features like non-volatility, low-power consumption and operation, and reconfigurable logic circuit. Spintronics also contributed on the advancement of the next generation supercomputer, which is proposed to use quantum-computation devices based on the spintronics technology.

   Spintronics is not only about making new devices, its importance also lies in the very physics of it, which helps us learn and understand more about the quantum world, such as the creation of pure spin current without the usual charge current, and spin Hall effect that originates from relativistic quantum effects, to name a few.

   The importance of spintronics as a field of science has been certified when at 2007 Albert Fert and Peter Grunberg received the Nobel Prize in Physics for their discovery of the Giant Magnetoresistance Effect.

   In our laboratory, we are using group IV elements – the most important materials in the large-scale integrated circuit technology today – to develop novel semiconductor spintronic devices and understand the underlying physical process inside it.  

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